BAPSY Methodical & Stats Analysis 2

Question 1

A researcher finds r = 0.85 between study hours and exam scores. What does this indicate?

Accepted Answer

A strong positive linear relationship

Answer

r = 0.85 indicates a strong positive linear relationship, but correlation does not imply causation.

Question 2

Which of the following best describes a Type II error?

Accepted Answer

Failing to reject a false null hypothesis

Answer

A Type II error (beta error) occurs when a researcher fails to reject a null hypothesis that is actually false.

Question 3

In an ANOVA, the F-ratio is computed as:

Accepted Answer

Between-group variance / Within-group variance

Answer

The F-ratio in ANOVA equals between-group variance (MSB) divided by within-group variance (MSW).

Question 4

Which sampling method gives every member of a population an equal chance of being selected?

Accepted Answer

Simple random sampling

Answer

Simple random sampling assigns each population member an equal and independent probability of selection.

Question 5

A chi-square test of independence is most appropriate when:

Accepted Answer

Both variables are categorical

Answer

Chi-square tests of independence evaluate whether two categorical variables are associated.

BAPSY - Bachelor of Arts in Psychology Practice Test