BAPSY FREE Bachelor of Arts in Psychology: Methodical & Stats Analysis Questions and Answers 2

Question 1

A researcher finds a correlation of r = 0.85 between study hours and exam scores. What percentage of variance in exam scores is explained by study hours?

Accepted Answer

72.25%

Answer

The coefficient of determination (r²) is 0.85² = 0.7225, meaning 72.25% of variance is explained.

Question 2

Which measure of central tendency is most appropriate for highly skewed income data?

Accepted Answer

Median

Answer

The median is resistant to extreme values and best represents the center of skewed distributions.

Question 3

In a 2x3 factorial ANOVA, how many interaction effects can be tested?

Accepted Answer

1

Answer

A two-factor ANOVA has exactly one interaction effect between the two independent variables.

Question 4

A psychologist wants to determine if therapy type predicts group membership (improved vs. not improved). Which test is most appropriate?

Accepted Answer

Chi-square test of independence

Answer

Chi-square tests whether two categorical variables are independent of each other.

Question 5

What does a p-value of 0.03 indicate in hypothesis testing at α = 0.05?

Accepted Answer

Reject the null hypothesis

Answer

Since p (0.03) is less than α (0.05), there is sufficient evidence to reject the null hypothesis.

BAPSY - Bachelor of Arts in Psychology Practice Test

BAPSY - Bachelor of Arts in Psychology Practice Test

BAPSY FREE Bachelor of Arts in Psychology: Methodical & Stats Analysis Questions and Answers 2