Question 1

Which of the following is not a measure of central tendency?

Accepted Answer

Standard Deviation

Answer

Median

Answer

Mean

Answer

Mode

Question 2

What is the null hypothesis in a research study?

Accepted Answer

There is no significant relationship between the variables.

Answer

The variables are independent of each other.

Answer

The researcher is unsure about the relationship between the variables.

Answer

There is a significant relationship between the variables.

Question 3

What is a confounding variable in research studies?

Accepted Answer

A variable that is not the main focus of the study, but influences both the independent and dependent variables.

Answer

A variable that is controlled by the researcher to ensure accurate results.

Answer

A variable that only influences the independent variable.

Answer

A variable that is not important in the study and can be ignored.

Question 4

What is the difference between reliability and validity in research?

Accepted Answer

Reliability refers to the consistency and stability of measurement, while validity refers to the accuracy and truthfulness of measurement.

Answer

Reliability and validity are unrelated concepts in research methods.

Answer

Reliability and validity are interchangeable terms with the same meaning.

Answer

Reliability refers to the accuracy and truthfulness of measurement, while validity refers to the consistency and stability of measurement.

Question 5

What is a random sample in research?

Accepted Answer

A sample in which every member of the population has an equal chance of being selected.

Answer

A sample that is selected based on specific criteria set by the researcher.

Answer

A sample that includes only participants who volunteer to participate in the study.

Answer

A sample that is representative of the entire population being studied.

Question 6

What is a double-blind study in research?

Accepted Answer

A study where neither the participants nor the researchers know who is in the control group and who is in the experimental group.

Answer

A study where researchers are aware of which participants are in the control group and which are in the experimental group.

Answer

A study where participants are aware they are receiving a treatment, but the researchers are unaware of group assignments.

Answer

A study with two groups of participants, one receiving the treatment and the other receiving a placebo.

Question 7

What is a correlation coefficient in research?

Accepted Answer

A numerical value that measures the strength and direction of the relationship between two variables.

Answer

A statistical test used to determine causation between two variables.

Answer

A method of sampling used to obtain representative data.

Answer

A measure of the average of a set of data points.

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