Thesis

The systematic collection, analysis and interpretation of data to answer a certain question or solve a problem is called

Maternal mortality rate in a given year is defined as

The process of collection, evaluation & integration by which clinical decisions are made using research, clinical experience and patient value is defined as

The evidence based medicine (EBM) comprises of expertise, patient preference and_______

Systematic review (SR) or meta-analysis of randomized controlled trials [RCTs] is classified as evidence level of

Which is the lowest level of evidence?

The highest level of evidence in the evidence based medicine (EBM) is

���ារស្រាវជ្រាវមានសារះសំខាន់ក្នុងការអនុវត្តផ្អែកលើភស្តុតាង (EBM) ប្រយោជន៏ធ្វើការសម្រេចចិត្តគ្លីនិកទាក់ទងនឹងការថែទាំជំងឺ។តើភស្តុតាងនៃប្រភេទស្រាវជ្រាវមួយណាដែលល្អបំផុត?

What type of statistics is used for studies whose primary purpose is descriptive and explorative that simply to describe situations or events?

What type of statistics is used for studies whose primary purpose is explanatory to examine the relationships among variables?

���ិក្ខេបបទ ខុសពីពីធីសារគម្រោងនិក្ខេបបទ នៅផ្នែកណាមួយ?

���ារស្រាវជ្រាវដែល ប្រើទិន្នន័យលេខ​ (numeric date) និង វិភាគដោយប្រើស្ថិតិវិទ្យា គឺជា

���ារស្រាវជ្រាវ ដែល ប្រើទិន្នន័យមិនលេខ ៖​ ជាអក្សរ សម្ពី ... និងវិភាគតាមខ្លឹមសារ(Content or theme analysis) គឺជា

The characteristic or attribute of an individual, group, educational system that can take on different values is called

The are two main type of variables, which are

Which of the following is the dependent variable in study of lung cancer and smoking?

Which of the following is an independent variable in the study of lung cancer and smoking?

Which one of the following variables is categorical?

Age of the mother in years is type of variable

Birth Weight of baby in grams is type of variable

Race (1 = White, 2 = Black, 3 = Other) is considered as

History of Hypertension with the answer 1 = hypertension, 0 = No hypertension is a type of variable

Smoking status with the answer 1 = Smoking, 0 = No smoking is a type of variable

Number of maternal Visits During throughout pregnancy is a type of variable

A study wishes to assess birth characteristics in a population. Delivery type classified as caesarean, natural or induced. Birth weights (in grams) were classified as low, normal or high. What type of variables are used in the study?

A study wishes to assess birth characteristics in a population to collect delivery type and birth weights. Birth weights were classified as low, normal or high (in grams) were classified as low, normal or high. What type of variables is Birth weights that are classified as low, normal or high?

Team of investigators conducted a study on 180 medical students employing standardized questionnaire to assess hypertension prevalence and their cardiovascular disease risk factors (age, sex, salt intake and stress). The dependent variable for this study was

Number of ante-natal care visits of women was collected in one study. Which of the following variables describes the appropriate variable type for Number of ante-natal care visits of women?

A numerical value used as a summary measure for a sample, such as sample mean or standard deviation, is known as a?

What is the difference between a population parameter and a sample statistic?

Which one of the following variables is NOT categorical?

Survey asked people how often they exceed speed limits. The age is then grouped into two groups of age under 30 and over 30. For age Under 30, speeding counts were 100 persons and not speeding were 100 persons. The age grouping is type of

The level of measurement that allows for the rank ordering of data items is?

Labels or names used to identify attributes of elements are?

A characteristic of interest for the elements is?

Arithmetic operations are appropriate for?

From a sample of students in one research class, you collect the followings: the student's name, gender, weight, and their grade (as A B C D E or F) in anatomy. The variable student's gender is measured on which scale of measurement?

From a sample of students in one research class, you collect the following: the student's name, gender, and weight in anatomy. The variable student's weight is measured on which scale of measurement?

From a sample of students in one research class, you collect the following: the student's name, gender, weight, and their grade (as A B C D E or F) in anatomy. The variable student's grade (as A B C D E or F) in anatomy is measured on which scale of measurement?

Temperature, in Fahrenheit, is an example of a variable measured on the following scale:?

WHO stated that anemia is the most common public health problem in the world, affecting all ages: 50% in children under 4 and 45% among school-aged children. Koum et al., 2013 collected data on hemoglobin, age, sex, reasons for consultation, clinical signs, diagnoses. They found that prevalence of anemia was 88.5%, fever was the first reason for consultation. And malaria was the main pathology (46.3%). What type of variables shown in the results?

���្អែកលើការប្រើប្រាស់ តើការស្រាវជ្រាវ ចែកចេញ ជាអ្វីខ្លះ?

���ារស្រាវជ្រាវ បែបបរិមាណវិស័យ ខុសពីការស្រាវជ្រាវបែប គុណវិស័យ ត្រង់ចំណុច ដែលការស្រាវជ្រាវ បែប បរិមាណវិស័យ៖

���ារស្រាវជ្រាវ បែប ប្រតិបត្តិ (applied research) មានន័យថា ការស្រាវជ្រាវបែបនេះ សម្រាប់៖

Why do you need to review the existing literature?

To read critically means:

What is self-plagiarism?

What is a narrative literature review?

When accessing the internet, which of these steps is the most essential?

The starting point for a literature search is:

Researchers need to be cautious of some material, particularly material found online. Why?

Which one of these is likely to be peer-reviewed Journal?

Which is the major disadvantage of using peer-reviewed journals in literature reviews?

A literature review is best described as

Which one is best to describe a literature review?

Which is the most reliable source of information for your literature review?

Critical analysis means

A critique of the status of knowledge of a carefully defined topic is referred to as a

A review of the literature could enable the investigator to do which of the following?

Why is a primary literature source more valuable to a researcher than a secondary literature source?

Which of the following is a source for secondary literature?

Which one of the following statements does NOT appropriately describe the review of the literature in a QUANTITATIVE report?

What is the first step for literature review?

How can you organize your literature review?

A literature review is a written summary of the findings of a literature _______?

���្នកដឹងច្បាស់ថា ការពីនិត្យឯកសារវិទ្យាសាស្រ្តគឺចាំបំផុតក្នុងការស្រាវជ្រាវ។ ជំហានទី១ ដែលអ្នកប្រើប្រាស់សម្រាប់ការពិនិត្យឯកសារនោះ គឺ៖

What is in PubMed?

Boolean operators for PubMed are

Which of the following PubMed search strategies will retrieve citations on the topic of hypertension to stress or sleep?

Which of the following PubMed search strategies will retrieve citations in the title of your chosen topic?

Which is the truncation symbol used for searching in PubMed?

In the text, et al. Is used for ______authors

MedLine ជាប្រភេទ នៃ៖

���ើមួយណាត្រឹមត្រូវសម្រាប់ឯកសារយោងប្រភេទ ទី១៖

PubMed is free and good search engine comprising "more than 35 million citations for biomedical literature from MEDLINE, life science journals, and online books". You want to study about "complications/side effects and conversion of laparoscopic cholecystectomy in your department.." What efficient way to search in PubMed?

Laparoscopic cholecystectomy (LC) is the standard treatment for acute cholecystitis with fewer complication. However, Terho et al. (2016; https://pubmed.ncbi.nlm.nih.gov/27891173/) identified risk factors associated with conversion and postoperative complications of laparoscopic cholecystectomy in patients with acute calculous cholecystitis in their retrospective study. What were dependent AND independent variables for the study?

Moon Fai Chan និង Yu-Li Zang បានបោះពុម្ភផ្សាយអត្តបទ Nurses’ level of diabetes mellitus knowledge នៅ ទស្សនាវដ្តី Clinical Nursing វ៉ូលីម 16 ការផ្សាយទី 7b​ និង ទំព័រ​ 234-242 នៅ ខែ កក្កដា 2007 យោងតាមប្រព័ន្ធ Vancouver ឯកសារនេះ ត្រូវសរសេរ៖

���ម្រាប់ប្រព័ន្ធ Vancouver ឈ្មោះទស្សនាវដ្តី ដែលសរសេរត្រឹមត្រូវ សម្រាប់ Journal of Clinical Nursing គឺ៖

���ម្រាប់ប្រព័ន្ធ Vancouver ឈ្មោះទស្សនាវដ្តី ដែលសរសេរត្រឹមត្រូវ សម្រាប់ Journal of Clinical Nursing គឺ៖

���កសារយោងChan MF, Zang Y. Nurses’ level of diabetes mellitus knowledge. J Clin Nurs. 2007 Jul;16(7b):234–242 ។ (7b) តំណាងឲ្យ៖

���កសារយោងChan MF, Zang Y. Nurses’ level of diabetes mellitus knowledge. J Clin Nurs. 2007 Jul;16(7b):234–242 ។ 16(7b) តំណាងឲ្យ៖

When the source has 6 or more authors, in reference list is used

When there are three sources: 1,3 and 5, in the text it is written as using Vancouver

The objective study for Terho et al. (2016; https://pubmed.ncbi.nlm.nih.gov/27891173/) was to identify risk factors associated with conversion and postoperative complications of laparoscopic cholecystectomy in patients with acute calculous cholecystitis. What was the objective study for Terho et al. (2016)?

Which of the following will give a more “accurate” representation of the population from which a sample has been taken?

People who are available, volunteer, or can be easily recruited are used in the sampling method called?

In which of the following non-random sampling techniques does the researcher ask the research participants to identify other potential research participants?

The type of sampling in which each member of the population selected for the sample is returned to the population before the next member is selected is called?

Which of the following would usually require the smallest sample size because of its efficiency?

The nonrandom sampling type that involves selecting a convenience sample from a population with a specific set of characteristics for your research study is called?

Which of the following sampling methods is the best way to select a group of people for a study if you are interested in making statements about the larger population?

Determining the sample interval (represented by k), randomly selecting a number between 1 and k, and including each kth element in your sample are the steps for which form of sampling?

When each member of a population has an equally likely chance of being selected, this is called:?

Which of the following techniques yields a simple random sample?

Sampling in qualitative research is similar to which type of sampling in quantitative research?

Which of the following types of sampling involves the researcher determining the appropriate sample sizes for the groups identified as important, and then taking convenience samples from those groups?

Which of the following is the most efficient random sampling technique?

A number calculated with complete population data and quantifies a characteristic of the population is called which of the following?

Which of the following is a type of random sampling?

Sample is a sub-set of

List of all the units of the population is called

Any measure of the population is called

If all the units of a population are surveyed, it is called:?

Probability distribution of a statistics is called:?

In probability sampling, probability of selecting an item from the population is known and is:

A population about which we want to get some information is called?

Sampling of the population is called?

Sampling based upon equal probability is called?

In sampling with replacement, an element can be chosen?

In sampling without replacement, an element can be chosen?

Random sampling is also called?

Non-random sampling is also called?

Sampling error can be reduced by

A Plan for obtaining a sample from a population is called

The difference between the expected value of a statistic and the value of the parameter being estimated is called a?

The standard deviation of any sampling distribution is called?

When a random sample is drawn from each stratum, it is known as?

In random sampling, the probability of selecting an item from the population is

When every member of a population has an equal chance of being selected for a sample

The sampling frame is the

Cluster sampling is often preferred to other random sampling strategies because it?

Stratified random sampling is the preferred strategy when?

Systematic sampling can produce a very biased sample when?

You are interested in factors that predict loyalty to sports teams. Which of the following would be an example of a purposive sampling strategy?

Convenience samples are frequently used in student research because they:?

Which of the following is not a type of non-probability sampling?

Snowball sampling can help the researcher to?

Which of the following is not a characteristic of quota sampling?

The findings from a study of young single mothers at a university can be generalised to the population of?

A sampling frame is?

A simple random sample is one in which?

Interviewing all members of a given population is called?

Which ONE of these sampling methods is a probability method?

Which ONE of the following is the main problem with using non-probability sampling techniques?

Which ONE of the following is the best - but an often unused - way to decide on sample size?

Which ONE of the following methods is generally used in qualitative sampling?

When each member of a population has an equally likely chance of being selected, this is called?

Which of the following is not true about stratified random sampling?

Which of the following statements are true?

Which of the following sampling techniques is a probability selection method in which every individual in the population has an equal chance of being selected?

Which of the following is not a form of nonrandom sampling?

If we took the 200 people attending a school in Phnom Penh, divided them by gender, and then took a random sample of the males and the females, this dividing of the population is called?

In quantitative research, it is recommended by Israel (1992) to use the whole population rather than a sample when the population size is of what size?

Which of the following is not an example of a nonrandom sampling technique?

Which of the following sampling methods is the best way to select a group of people for a study if you are interested in conclusion about the larger population?

A set of elements taken from a larger population according to certain rules.

Sampling in which a sampling unit can be repeated more than once is called?

Non probability form of sampling is?

In random sampling, the probability of selecting an item from the population is?

The list of all units in a population is called?

Any numerical value computed from the population is called?

The sample is a subset of?

Any numerical value calculated from sample data is called?

In sampling with replacement, a sampling unit can be selected?

Teacher Sopha samples her class by selecting 10 girls from 50 girls and 5 boys from 50 boys. This type of sampling is called?

Which of the following is NOT part of the sampling design process?

Which of the following is NOT a qualitative factor that should be considered in determining the sample size?

Which of the following is NOT true of probability sampling?

What is the least expensive and least time-consuming of all sampling techniques?

Which of the following are NOT criteria for the selection of stratification variables in stratified sampling?

Select all of the following statements which you believe to be tru A truly random sample of the general population would be obtained by:

Below is a list of populations and samples. Select the sample that is most likely to be representative (rather than biased) of the population from which it is drawn.

Which of the following is NOT a characteristic of quota sampling?

What effect does increasing the sample size have upon the sampling error?

Which of the following is NOT a type of non-probability sampling?

An abstract of the journal article doesn’t contain?

For a survey, a school is divided into 100 classes and one class sampled randomly. It is an example of:?

One study was conducted to estimate the prevalence of vaccination of under-5 in Cambodia. The study randomly selected 100 villages across Cambodia. The sampling technique used was?

Which is true of cluster sampling?

A researcher divides the population into three groups based on age. If the researcher then draws a random sample from each age group independently, the sampling is called?

Stratified samples may be distinguished from quota samples because with a stratified sample, sample elements are selected?

If a researcher wishing to draw a sample from sequentially numbered invoices uses a random starting point, then draws every 50th invoice, he has thus drawn a _____ sample.?

���ាទូទៅ ទំហំសំណាកធំ អាស្រ័យលើ ៖

���ើមួយ​ណា ជាចម្លើយត្រឹមត្រូវបំផុតសម្រាប់ទំហំសំណាក នៃការស្រាវជ្រាវ?

���េចង់សិក្សា ពី ភាពចិត្ត ពេញថ្លើម របស់និស្សិត ដែលកំពុងសិក្សា ចំពោះសេវា ដែល សាលាកំពុងផ្តល់ នៅសាលា បច្ចេកទេសថែទាំ វេជ្ជសាស្រ្តយើងនេះ។ តើ នរណា ជាប្រជាជនសម្រាប់ការ សិក្សានេះ?

���េចង់សិក្សា ពី ភាពចិត្ត ពេញថ្លើម របស់និស្សិត ដែលកំពុងសិក្សា ចំពោះសេវា ដែល សាលាកំពុងផ្តល់ នៅសាលា បច្ចេកទេសថែទាំ វេជ្ជសាស្រ្តយើងនេះ ដែល មាននិស្សិតសរុបចំនួយ 2000នាក់។ ទំហំសំណាកប្រសើរបំផុតសម្រាប់ការសិក្សានេះ គឺ៖

���េចង់សិក្សា ពី ភាពចិត្ត ពេញថ្លើម របស់និស្សិត ដែលកំពុងសិក្សា ចំពោះសេវា ដែល សាលាកំពុងផ្តល់ នៅសាលា បច្ចេកទេសថែទាំ វេជ្ជសាស្រ្តយើងនេះ ដែល មាននិស្សិតសរុបចំនួយ 2000នាក់។ឧទាហរណ៏ថា ភាព ពេញ ចិត្ត នៃការមារសិក្សា មុន មាន p=40% ហើយ ដោយយក e=10%​ និង z=1,96​ នោះទំហំសំណាក នៃការសិក្សានេះស្មើនឹង ៖

���ើមួយណា ជាចម្លើយត្រឹមត្រូវ សម្រាប់ទំហំសំណាក?

���ំហំសំណាកសម្រាប់ការសិក្សាបែប គុណភាព តូច ព្រោះតែ ៖

���ើមួយណាត្រឹមត្រូវ សម្រាប់គណនាទំហំសំណាក នៃសម្រាមាត្រទោល៖

���ើមួយណាត្រឹមត្រូវសម្រាប់គណនាទំហំសំណាកសម្រាប់សមាមាត្រ ដែកមិនដឹងពី សមាមាត្រ (unknown p) នៃប្រជាជន៖

���ើមួយណាត្រឹមត្រូវ សម្រាមាត្រនៃប្រជាជន​ (unknown p) ហើយសន្មត 95% នៃការជឿ ជាក់z=1,96​​ និង កំហុសបទដ្ធាន e=5% នោះទំហំសំណាក n​ សើ្មនឹង​ ៖

Which of the following formulae is used to include participants in the original sample size for compensating non-response?

���្រសិនបើអញ្ញត្ត e និង​ z ថេរ សម្រាប់ រូបមន្តទំហំសំណាកសមាមាត្រ​ តើ p​ មួយណាដែលធ្វើ ឲ្យទំហំសំណាក n ធំបំផុត?

���ម្រាប់ 95% ​នៃចន្លោះការជឿជាក់ (95% CI) z​ ស្មើនឹង ៖

���ើកំហុសបទដ្ធាន (sampling error--e) មួយណា ដែលឲ្យទំហំសំណាកតូចបំផុត ប្រសិនបើអញ្ញត្ត z និង p ថេរ៖

���្នុងការសិក្សា គេរំពឹងថា មាន​ អ្នកចូលរួម 20%​ នឹង មិនចូលរូម ក្នុងការសិក្សានេះទេ ។ ក្នុងករណីបែបនេះ គប្បី៖

���ើមួយណាត្រឹមត្រូវ សម្រាប់ រូបមន្តទំហំសំណាបែប មធ្យមភាគទោល៖

���ើមួយណា ជាការជ្រើសរើស សំណាកប្រសើរបំផុត?

���ារជ្រើសរើស តំណាងអង្កេត ជារបៀបប្រូប៊ីលីតេ​​ (Probability Sampling)​ បានសេចក្តីថា ឯកតា(elements)នីមួយៗ មានសំណាង (probability)៖

���្នកប្រើរើសសំណាកស្រទាប់ (proportionate stratified sampling) ចំនួន ១០០ នាក់ ដែល មាន ភេទាប្រុស 30% និង ស្រី 70%​ នៃសំណាកទាំងមូល ។ ដូចនេះ ស្រទាប់នីមួយៗ នៃសំណាកនេះ មាន៖

���ំណាកស្រទាប់ (Stratified Random Sample) ជាប្រភេទ នៃការជ្រើសរើស សំណាក ​បែប៖

���ារជ្រើសរើស សំណាកចៃដន្យសាមញ្ញ (Simple Random Sample) ជាប្រភេទ នៃការជ្រើសរើសសំណាក បែប ៖

���ំណាកចង្កោម (Cluster sampling) ជាប្រភេទ នៃការជ្រើសរើស សំណាកបែប ៖

���ំណាក ជាប្រព័ន្ធ (Kth sampling) ជាប្រភេទ នៃ​ការជ្រើសសំណាក បែប ៖

���ំណាកគោលដៅ (Purposive sampling) ជាប្រភេទ នៃការជ្រើសរើស សំណាក​ បែប ៖

���ំណាក ងាយ (Convenience sampling) ជាប្រភេទ នៃការជ្រើសរើស តំណាងអង្កេត ៖

���្នកស្រាវជ្រាវ បានជ្រើសរើស អ្នកចូលក្នុងការសិក្សារាល់ទី ១០ ពី បញ្ជីប្រជាជនសិក្សា ចំនួន១០០នាក។ តើការជ្រើសរើស សំណាកនេះ ជាប្រភេទអ្វី?

���្នកស្រាវជ្រាវ បានសរសេរឈ្មោះប្រជាជនក្នុងប្រអប់បន្ទាប់មកគាត់ចាប់យក អ្នកចូលរួមម្តងមួយៗ រហូតគ្រប់ចំនួនសម្រាប់ការសិក្សាគាត់ ។ តើការជ្រើសរើសសំណាកនេះ ជាប្រភេទ អ្វី?

���្នកស្រាវជ្រាវ បានចែកប្រជាជនសិក្សាដែលមានលក្ខណះដូចគ្នាជាក្រុមបន្ទាប់មកគាត់ចាប់យកអ្នកចូលរួមពី ក្រុមនីមួយៗតាមបែបសំណាកងាយ(convenience sampling)។ តើការជ្រើសរើសសំណាកនេះ ជាប្រភេទអ្វី?

���ាពខុសគ្នានៃសំណាកស្រទាប់ពីសំណាកកូតាគឺនៅត្រង់ថាសំណាកស្រទាប់ជ្រើសរើសអ្នកចូលរួមតាមបែប ៖

���្នកស្រាវជ្រាវ បានអញ្ជើញ អ្នកជំនាញផ្នែកជំងឺឆ្លងដើម្បីផ្តល់យបល់ ពីការការពារជំងឺផ្តាសាយបក្សីនៅកម្ពុជា។ តើការជ្រើសរើសនេះជាសំណាកអ្វី?

���្នុងការសិក្សាមួយស្តីពីសារះសំខាន់់អំពីអាហារពេលព្រឹកគេបានប្រមូលទិន្នន័យប្រជាសាស្រ្តមាន៖ ក្រុម អាយុ ភេទ សាសនា និង មធ្យមភាគ នៃចំណូចប្រចាំឆ្នាំ ។ ទិន្នន័យជំពូកសម្រាប់ការ សិក្សានេះ គឺ៖

���្នុងការសិក្សាមួយស្តីពីសារះសំខាន់អំពីអាហារពេលព្រឹកគេបានប្រមូលទិន្នន័យសម្រាប់អថេរមួយចំនួនមាន៖ក្រុម អាយុ ភេទ សាសនា និងចំនូលប្រចាំឆ្នាំ ជាមធ្យម​ ។ ទិន្នន័យលេខ សម្រាប់ការសិក្សានេះគឺ

���ារសិក្សាមួយប្រមូលទិន្នន័យអំពី ចំណាត់ថ្នាក់នៃពិន្ទុ ABCDEF ។ អថេរនេះ ជាប្រភេទ ៖

���្នកជ្រាវជ្រាវចង់រកទំនាក់ទំនង នៃការជក់បារីនឹងមហារីសួតចំពោះអ្នកជំងឺ អាយុលើស65ឆ្នាំ។​​​ មួយណាជាអថេរឯករាជ្យ នៃស្រាវជ្រាវនេះ?

���ារស្រាវជ្រាវមួយបង្ហាញការលើសទម្ងន់ (BMI) មានទំនាកទំនង ទៅនឹងជំងឺ លើសសម្ពាធឈាម តើមួយណាជាអថេរចំណុះ (មិនឯករាជ្យ) នៃស្រាវជ្រាវនេះ?

���ារស្រាវជ្រាវមួយបង្ហាញការលើសទម្ងន់​ (BMI) ទៅនឹងជំងឺលើសសម្ពាធឈាម តើមួយណា ជាអថេរឯករាជ្យនៃស្រាវជ្រាវនេះ?

���ារស្រាវជ្រាវមួយបង្ហាញការលើសទម្ងន់​ (BMI) ទៅនឹងជំងឺលើសសម្ពាធឈាម ។ ការលើសទម្ងន់ចែកជាពីរក្រុម ( ទម្ងន់ធម្មតា និង លើស ) ហើយសម្ពាធឈាមចែកជាពីររក្រុមដែរ(សម្អាធឈាម ធម្មតា និង លើស) ។ ការលើសទម្ងន់ និង លើសសម្ពាធឈាម ជាថេរ

���ើមួយណាជាភាពខុសគ្នារវាងសំណួរបិទនិងសំណួរបើកបិទ?

���ើមួយណាជាគុណសម្បត្តិ នៃសំណួរបិទ?

���ើលក្ខណះសម្បត្តិនៃកម្រងសំណួរល្អមានអ្វីខ្លះ?

���្នកស្រាវជ្រាវសិក្សាពីបទពិសោធន៏ម្តាយចំពោះការបំបៅដោះកូន ហើយគាត់ជ្រើសរើសឳពុកមកសម្ភាសសួរអំពីបទពិសោធន៏នេះ។​ តើមួយណានៃចម្លើយខាងក្រោមសមស្របបំផុត?

���ា ទូទៅមធ្យ​មភាគ អាចគណនាសម្រាប់អថេរ

���ារសិក្សាមួយអំពី ការហូបប្រៃនិង​សម្ពាធ ។​ ការហូបប្រៃជាប្រភេទ​នៃ អថេរ

���ារសិក្សាមួយអំពីការហូបប្រៃនិងសម្ពាធឈាម​ ។ សម្ពាធឈាមជាប្រភេទ នៃអថេរ

���ារសិក្សាមួយអំពីការហូបប្រៃនិងសម្ពាធឈាម ។ អំបិលត្រូវបានប្រមូលជាមីលីក្រាម ហោយសម្ពាធជាពីក្រុម ( សម្ពាធឈាមធម្មតានិងលើសសម្ពាធឈាម) ។ សម្ពាធឈាមក្នុងការសិក្សានេះជាប្រភេទនៃអថេរអ្វី?

In one study, each participant was randomly assigned each to walk for half an hour three times a week or to sit quietly reading a book for half an hour three times a week. At the end of a year the change in participants' blood pressure over the year was measured, and the change was compared for the two groups. This is a randomized experiment rather than an observational study because:?

From a sample of students in one research class, you collect the following: the student's name, gender, weight, and their grade (as A B C D E or F) in anatomy. Assuming these data were collected at the same time, it is an example of?

From a sample of students in one research class, you collect the following: the student's name, gender, weight, and their grade (as A B C D E or F) in anatomy. The data would have been collected using?

���ិធីសាស្រ្តនៃការសិក្សា មានន័យថា

���ារសិក្សាបែបសង្កេត (Observational study) មាន

Ethnography ជាប្រភេទ នៃ

���ារសិក្សាបែបពិសោធន៏ជាប្រភេទនៃ

���ារសិក្សា តាមបណ្តោយ (longitudinal) អាចសិក្សា ពី

���ាទូទៅការសិក្សាបែបពណ៍ (descriptive study) រៀបរាប់អំពី

���ារសិក្សាបែបប្រៀបធៀប (comparative study) ជាការសិក្សា

���ុណវិបត្តិបំផុតសម្រាប់ការសិក្សាបែប ពិសោធន៏ គឺ

���ារសិក្សា​អំពីសុខភាពនិងប្រជាសាស្រ្តនៃកម្ពុជា (CDHS) ដែលធ្វើរាល់៥ឆ្នាំម្តង ជាប្រភេទនៃការសិក្សាបែប

���ិធីសាស្រ្តនៃការសិក្សាមានន័យថា?

���ារសិក្សាបែបសង្កេត (Observation study) មាន?

���ារសិក្សា សង្កេត (Observation study) មាន

���ារសិក្សាបែបពិសោធន៏ ជាប្រភេទនៃ?

���ារសិក្សាពិសោធន៏ (Experiment study) គឺជាការសិក្សា

���ាទូទៅការសិក្សាបែបពណ៍នា (descriptive study) រៀបរាប់អំពី

���ុណវិបត្តិធំបំផុតសម្រាប់ការសិក្សាបែបពិសោធន៏ គឺ

���ារសិក្សាអំពីសុខភាព និង​ ប្រជាសាស្រ្តនៃកម្ពុជា (CDHS) ដែលធ្វើរាល់៥ឆ្នាំម្តង ជាប្រភេទនៃការសិក្សាបែប

���ារសិក្សា ដែលប្រមូលទិន្នន័យនៅចំណុចណាមួយ ហើយគណនាប្រេវ៉ាឡង់ ដើម្បីរៀបរាប់ពីបន្ទុកនៃជំងឺ ហៅថា ការសិក្សា?

���ារសិក្សាមួយបានចាក់វ៉ាក់សាំងការពារកញ្រ្ជឺលលើកុមារអាយុ​ ៥ឆ្នាំ ចំនួន ១០០ នាក់ នៅមន្ទីរពេទ្យមួយ​ ហើយកុមារទៀត មិនបានចាក់ថ្នាំការពារកញ្រ្ជឺលទេ ។ មួយឆ្នាំក្រោយមកឃើញថា​មានកុមារ ៧០​ នាក់ឆ្លងកញ្រ្ជឺល ក្នុងនោះ ១០ នាក់ក្នុងក្រុមចាក់វ៉ាកសាំងកញ្រ្ជឺល និង ៦០ នាក់ ក្នុងក្រុមមិនចាក់វ៉ាក់សាំងកញ្រ្ចឺល ។ តើការរៀបរា់ខាងលើប្រភេទសិក្សាអ្វី?

���ារសិក្សាមួយបានប្រមូលទីន្នន័យពីសម្ពាយឈាម និង​ ហានិភ័យមួយចំនួន លើមនុស្សពេញវ័យ ១០០ នាក់ នៅមណ្ឌលសុខភាព​។ គេរកឃើញថា មាន 20% លើសសម្ពាធឈាម ។ តើការរៀបរាប់ខាងលើជាប្រភេទសិក្សាអ្វី?

A published study follows a large group of women with untreated dysplasia of the uterine cervix, documenting the number who improve, stay unchanged, or progress into cervical cancer. This study design is best described as?

A researcher assesses a random sample of its residents by telephone questionnaire. He found that overweight is strongly associated with hypertension. This study design is best described as:

Based on a list of men from the health center, 2/3 of men were invited (including health education about prostate cancer) and be screened for PSA while one third of men were not invited. Over the next 10 years the two groups are compared as to the rate of death from prostate cancer. This study design is best described as which one of the following:

The initial studies establishing maternal diethylstilbesterol (DES) intake as a cause of vaginal adenocarcinoma in female offspring were case-control studies. This was probably largely because:

What is a research design?

What is a cross-sectional design?

A study began in 1980 with a group of 10000 adults in one Town who were asked about their alcohol consumption. The occurrence of cancer was studied in this group in 2000-2005. This is an example of :?

An investigator takes a sample of healthy individuals, record their ongoing solar exposure, and relate that to the subsequent occurrence of skin cancer in the same group.?

What is the purpose of the Methodology in memoir report?

Research methodology is described as ?

The characteristic that most clearly distinguishes experimental designs from non-experimental designs is that in experimental designs?

The distinguishing characteristic of non-experimental designs is that?

The purpose of research using descriptive designs is to

The purpose of a survey is to?

A study is based on 30 people (across three focus groups). What type of study is this?

A study is based on 1000 people interviewed face to face in shopping centres. What type of study is this?

A cross-sectional design differs from a longitudinal design in that the samples: ?

In one study, it was noted that 40% of students use a personal computer at home. The 40% is an example of a?

The process of making inferences about the characteristics of the population based on the sample information is termed?

The study of the methods of organization, summarization, and presentation of data is referred to as?

In quartiles, central tendency median to be measured must lie in?

Method used to compute average or central value of collected data is considered as?

Survey asked people how often they exceed speed limits. The data are then categorized into two categories of age under 30 and over 30. For age Under 30, speeding counts were 100 persons and not speeding were 100 persons. In contrast, for age Over 30, speeding counts were 40 persons and not speeding were 160 persons. Among people with age over 30, what's the proportion of the speeding?

Survey asked people how often they exceed speed limits. The data are then categorized into the following contingency table of counts of age group by speeding or not speeding. For age Under 30, speeding counts were 100 persons and not speeding were 100 persons. In contrast, for age Over 30, speeding counts were 40 persons and not speeding were 160 persons. Among people with age Under 30, what's the proportion of the speeding?

Survey asked people how often they exceed speed limits. The data are then categorized into the following contingency table of counts of age group by speeding or not speeding. For age Under 30, speeding counts were 100 persons and not speeding were 100 persons. In contrast, for age Over 30, speeding counts were 40 persons and not speeding were 160 persons. What is overall percentage of the speeding?

Survey asked people how often they exceed speed limits. The data are then categorized into the following contingency table of counts of age group by speeding or not speeding. For age Under 30, speeding counts were 100 persons and not speeding were 100 persons. In contrast, for age Over 30, speeding counts were 40 persons and not speeding were 160 persons. What is overall percentage of the age Under 30?

Which one of these statistics is unaffected by outliers?

Quasi-experimental or experimental studies that used to for the purpose of prediction or control use

Quasi-experimental or experimental studies are used of

Descriptive statistics is used describe

Wang et al. (2020) reported that out of 138 patients, the median age was 56 years and range 22-92 years. A type of variable for the age is

���ូលរកមធ្យមភាគនៃទម្ងន់កុមារចំនួន១០នាក់ ៖ 5 5 10 10 15 15 20 20 25 25?

���៉ូដ (Mode) នៃលេខ 5 5 10 10 15 15 15 20 25 25?

���ារលាតសន្ធឹង (range) នៃលេខ 5 5 10 10 15 15 15 20 25 25?

���ូលរកមេដ្យាននៃទម្ងន់កុមារចំនួន១០នាក់ ៖ 5 5 10 10 15 15 20 20 25 25?

���ម្លាតបដ្ឋាន (standard deviation) ជារង្វាស់នៃ?

���េដ្យាន (Median) ជារង្វាស់នៃ?

���៉ូដ (Mode) ជារង្វាស់?

���ំណែងចែកធម្មតា(Normal distribution) មាន?

���ើមួយណាមិនមែនជារង្វាស់នៃទំនោតកណ្តាល (central tendency) ៖?

���ង្វាស់នៃទំនោរកណ្តាល (central tendency) ដែលចែកទិន្នន័យជាពីរផ្នែកស្មើគ្នា ហៅថា ៖?

���ង្វាស់នៃទំនោរកណ្តាល (central tendency) ដែលប្រើញឹកញប់ជាងគេគឺ ៖?

���ើមួយណាមិនមែនជារង្វាស់នៃការបែកខ្ញែក​ (dispersion) ៖?

���ធ្យមភាគអាចប្រែប្រួល តាម៖?

���ំពោះទិន្នន័យមានតម្លៃខ្ពស់ពេល ឬ ទាបពេក (extreme value) រង្វាស់ទំនោរកណ្តាលដែល សមស្របបំផុតគឺ

���ំពោះទិន្នន័យមានបំណែងចែកមិនធម្មតា (non-normal distributed data) រង្វាស់ទំនោរកណ្តាលដែលសមស្របបំផុតគឺ

���ារសិក្សាមួយថ្លឹងទម្ងន់(kg) នៃអ្នកជំងឺចំនួន១០នាក់ ដែលមាន 45 55 60 65 80 90 92 92 95 97 ។ ចូរគន(Median) នៃទម្ងន់?

���ំពោះទម្ងន់(ជា kg) នៃអ្នកជំងឺ10នាក់​មាន 45 55 60 65 80 90 92 92 95 97 ទាំងនេះ តើ រង្វាស់ទំនោតកណ្តាលមួយណាដែល សមស្របបំផុត?

���ំពោះទម្ងន់(kg) នៃអ្នកជំងឺ10នាក់មាន 45 55 60 65 80 90 92 92 95 97 ទាំងនេះ ។ គេបានគណនាមេដ្យាន ដែលរង្វាស់ទំនោរកណ្តាលសម្រាប់វិភាគទិន្នន័យនេះ ពីព្រោះ ទិន្នន័យមាន

���ៅពេលទិន្នន័យមានតម្លៃខ្ពស់ពេក ឬ​ទាបពេក (extreme value)​ រង្វាស់ការបែកខ្ញែកសមស្របគឺ?

Which of the following type of the diagrams can be used to find out the relationship between two numeric variables?

Low birth weight (LBW) statistics of a hospital is best shown by?

30 babies were born in hospital, 10 were less than 2.5 kg and 20 were greater than 2.5 kg. The variable for the classification of birth weight is?

Median is almost equivalent to?

Area between one standard deviation on either side of mean in normal distribution curve is?

Normal distribution is?

Correlation coefficient tends to lie between?

Height for weight of boys in a class room is:?

���ង្វាស់នៃការបែបខ្ញែក (measure of dispersion) ដែលប្រែជាមួយមធ្យមភាគគឺ

���ម្លៃដែលមានញឹកញាប់ជាងគេ​​ (most occurring value) ក្នុងទិន្នន័យមួយហៅថា

���ារសិក្សាមួយបានប្រមូលពិន្ទុពីនិស្សិត ហើយបានគណនាពិន្ទុដោយប្រើ IQR គឺស្មើ​នឹង 60%-80% ។ លទ្ធផល អាចនិយាយបានថា

���ើទិន្នន័យមានបំណែងចែកធម្មតា​ តើមានប៉ុន្មានភាគរយនៃអង្កេតនៅចន្លោះ មួយគម្លាតបទដ្ឋាន (1SD)?

���ិន្នន័យ ដែលមានកន្ចុយវែងទៅ ខាងឆ្វេងទិន្នន័យនោះមានបំណែងចែក

���ិន្នន័យ ដែលមានកន្ចុយវែងទៅ ខាងឆ្វេងជាបំណែងចែក

���ិន្នន័យជាបំណែងចែកអវិជ្ជមាន មាន

���ិន្នន័យដែលជាបំណែងចែកអមាន មាន

���ម្ងន់នៃស្រ្តីចំនួន 100 នាក់ មានបំណែងចែកធម្មតា ។ រង្វាស់ទនោរកណ្តាល ដែលសមស្របបំផុតសម្រាប់ពណ៍ទម្ងន់នៃស្រ្តី គឺ?

���េបានវាស់សម្ពាធឈាមស៊ីស្តូលិកមនុស្សពេញវ័យចំនួន 300 នាក់ ហើយតួលេខដែលទទួលបានមានបំណែងចែកធម្មតា គឺ ទោរទៅស្តាំ។ ក្នុងករណីនេះ រង្វាស់នៃទំនោរកណ្តាល​ (central tendency measure) ដែលសមស្រប សម្រាប់បង្ហាញជីបចរនោះ គឺ?

���េបានវាស់សម្ពាធឈាមស៊ីស្តូលិកមនុស្សពេញវ័យចំនួន 300​​ នាក់ ដែលមានមធ្យមភាគ (mean)= 95 mmHg ម៉េដ្យាន (median)=75mmHg និង ម៉ូដ (mode)=55 mmHg ។ ផ្អែកលើតូលេខខាងលើទិន្នន័យនេះជាទិន្នន័យ?

���េបានវាស់ជីបចរ (ចំនួនដឹង/នាទី) អ្នកចូលរួមជាបុរស 100​ នាក់ និង​ ស្ត្រីចំនួន 60 នាក់ ។ ការវិភាគទិន្នន័យសមស្របបំផុត សម្រាប់ភេទនៃអ្នកចូលរួម គឺ?

���ើរូបភាពមួយណាសមស្រប ក្នុងការបង្ហាញជីបចរតាមភេទនៃអ្នកចូលរួម ជាបុរសចំនួន 100​ នាក់ និង ស្រ្តីចំនួន 60​ នាក់?

���ក្ខណះសំខាន់សម្រាប់ pie chart គឺផលបូកនៃបន្ទះនីមួយៗ៖?

���ារលាតសន្ធឹង (range) នៃទិន្នន័យ 3 4 2 4 5 6 4 គឺ

���្រសិនបើ ការលាតសន្ធឹង Rang=4 ហើយតម្លៃអប្បបរិមា Min=2 នោះ តម្លៃអតិបរិមា Max ស្មើនឹង

���្រសិនបើ ការលាតសន្ធឹង Rang=4 ហើយតម្លៃអប្បបរិមា Mix=6 នោះ តម្លៃអតិបរិមា Max ស្មើនឹង

���ំពោះទិន្នន័យដែលមានបំណែងចែកទោរ (skewed distribution) រង្វាស់ទំនោរកណ្តាល ដែលសមស្របបំផុតគឺ?

���ៅពេលទិន្នន័យមានបំណែងចែកមិនធម្មតា (skewed distribution) រង្វាស់ការបែកខ្ញែកសមស្របបំផុតគឺ?