BS Research Methods and Statistics 1

Question 1

What is a null hypothesis in scientific research?

Accepted Answer

A statement that there is no effect or relationship between variables

Answer

A null hypothesis states that there is no significant effect or relationship between the variables being studied.

Question 2

Which measure of central tendency is most affected by extreme outliers?

Accepted Answer

Mean

Answer

The mean is most affected by outliers because it incorporates every value in its calculation.

Question 3

What does a p-value less than 0.05 typically indicate?

Accepted Answer

The result is statistically significant

Answer

A p-value below 0.05 means there is less than a 5% probability that the results occurred by chance, indicating statistical significance.

Question 4

What is the purpose of a control group in an experiment?

Accepted Answer

To provide a baseline for comparison against the experimental group

Answer

A control group does not receive the experimental treatment, providing a baseline to compare against the treatment group.

Question 5

Which type of research involves observing subjects in their natural environment without manipulation?

Accepted Answer

Naturalistic observation

Answer

Naturalistic observation is a method where researchers observe subjects in their real-world environment without interfering.

BS - Bachelor of Science Practice Test