Back
0

Sample Size and Reliability

Description: This quiz evaluates your understanding of sample size and reliability in psychological research.
Number of Questions: 15
Created by:
Tags: sample size reliability psychometrics research methods
Start the Quiz
Attempted 0/15 Correct 0 Score 0
‹
›

In a research study, the sample size refers to:

  1. The total number of participants in the study.

  2. The number of independent variables in the study.

  3. The number of dependent variables in the study.

  4. The number of hypotheses being tested in the study.

Show answer
Correct Option: A
Explanation:

Sample size refers to the number of participants or observations included in a research study.

Which of the following factors influences the sample size required for a research study?

  1. The level of significance.

  2. The effect size.

  3. The desired power of the study.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

The sample size required for a research study is influenced by the level of significance, the effect size, and the desired power of the study.

What is the purpose of calculating a confidence interval in a research study?

  1. To estimate the population mean.

  2. To determine the significance of the results.

  3. To assess the reliability of the findings.

  4. To generalize the results to the population.

Show answer
Correct Option: A
Explanation:

A confidence interval is used to estimate the range of values within which the true population mean is likely to fall.

Which of the following is a measure of the consistency of a measurement instrument?

  1. Validity.

  2. Reliability.

  3. Sensitivity.

  4. Specificity.

Show answer
Correct Option: B
Explanation:

Reliability refers to the consistency of a measurement instrument in producing the same results under similar conditions.

What is the difference between internal consistency and test-retest reliability?

  1. Internal consistency refers to the reliability of a single test, while test-retest reliability refers to the reliability of a test over time.

  2. Internal consistency refers to the reliability of a single test, while test-retest reliability refers to the reliability of a test across different groups of participants.

  3. Internal consistency refers to the reliability of a single test, while test-retest reliability refers to the reliability of a test over different conditions.

  4. Internal consistency refers to the reliability of a single test, while test-retest reliability refers to the reliability of a test over different methods of administration.

Show answer
Correct Option: A
Explanation:

Internal consistency refers to the reliability of a single test, while test-retest reliability refers to the reliability of a test over time.

Which of the following is a type of validity that assesses the extent to which a test measures what it is intended to measure?

  1. Content validity.

  2. Construct validity.

  3. Criterion validity.

  4. Face validity.

Show answer
Correct Option: B
Explanation:

Construct validity assesses the extent to which a test measures the underlying construct or trait that it is intended to measure.

What is the purpose of a pilot study in research?

  1. To test the feasibility of a research study.

  2. To estimate the sample size required for a research study.

  3. To develop a measurement instrument for a research study.

  4. To analyze the data collected in a research study.

Show answer
Correct Option: A
Explanation:

A pilot study is conducted to test the feasibility of a research study, including the procedures, instruments, and data collection methods.

Which of the following is a type of sampling method that involves selecting participants from a population based on their characteristics?

  1. Simple random sampling.

  2. Systematic sampling.

  3. Stratified sampling.

  4. Cluster sampling.

Show answer
Correct Option: C
Explanation:

Stratified sampling involves dividing the population into strata based on certain characteristics and then selecting participants from each stratum.

What is the difference between a population and a sample in research?

  1. A population is the entire group of individuals or objects that are being studied, while a sample is a subset of the population.

  2. A population is the entire group of individuals or objects that are being studied, while a sample is a group of individuals or objects that are similar to the population.

  3. A population is the entire group of individuals or objects that are being studied, while a sample is a group of individuals or objects that are representative of the population.

  4. A population is the entire group of individuals or objects that are being studied, while a sample is a group of individuals or objects that are different from the population.

Show answer
Correct Option: A
Explanation:

A population is the entire group of individuals or objects that are being studied, while a sample is a subset of the population.

Which of the following is a type of sampling method that involves selecting participants from a population based on their proximity to each other?

  1. Simple random sampling.

  2. Systematic sampling.

  3. Stratified sampling.

  4. Cluster sampling.

Show answer
Correct Option: D
Explanation:

Cluster sampling involves dividing the population into clusters and then selecting a sample of clusters.

What is the purpose of a research hypothesis?

  1. To provide a prediction about the outcome of a research study.

  2. To explain the relationship between variables in a research study.

  3. To test the validity of a measurement instrument in a research study.

  4. To generalize the results of a research study to a larger population.

Show answer
Correct Option: A
Explanation:

A research hypothesis provides a prediction about the outcome of a research study.

Which of the following is a type of research design that involves comparing two or more groups of participants?

  1. Experimental design.

  2. Quasi-experimental design.

  3. Observational design.

  4. Correlational design.

Show answer
Correct Option: A
Explanation:

An experimental design involves comparing two or more groups of participants, where one group is exposed to an independent variable and the other group is not.

What is the difference between a dependent variable and an independent variable in a research study?

  1. A dependent variable is the variable that is being measured, while an independent variable is the variable that is being manipulated.

  2. A dependent variable is the variable that is being manipulated, while an independent variable is the variable that is being measured.

  3. A dependent variable is the variable that is being predicted, while an independent variable is the variable that is being used to make the prediction.

  4. A dependent variable is the variable that is being controlled, while an independent variable is the variable that is being changed.

Show answer
Correct Option: A
Explanation:

A dependent variable is the variable that is being measured, while an independent variable is the variable that is being manipulated.

Which of the following is a type of research design that involves observing participants in their natural setting?

  1. Experimental design.

  2. Quasi-experimental design.

  3. Observational design.

  4. Correlational design.

Show answer
Correct Option: C
Explanation:

An observational design involves observing participants in their natural setting without manipulating any variables.

What is the purpose of a literature review in a research study?

  1. To identify existing research on the topic of the study.

  2. To develop a research hypothesis for the study.

  3. To design the methodology for the study.

  4. To analyze the data collected in the study.

Show answer
Correct Option: A
Explanation:

A literature review is conducted to identify existing research on the topic of the study and to develop a research hypothesis.

- Hide questions
ADVERTISEMENT

Find more quizzes from top tags

general knowledge
3615 Quizzes
119858 Questions
 technology
307 Quizzes
36705 Questions
 sports
963 Quizzes
19148 Questions
 history
1187 Quizzes
13475 Questions
 physics
598 Quizzes
13441 Questions
 biology
1160 Quizzes
12174 Questions
 science & technology
551 Quizzes
11015 Questions
 chemistry
490 Quizzes
9892 Questions
 maths
518 Quizzes
9324 Questions
 softskills
0 Quizzes
7131 Questions