Choose the correct option

What is an independent variable?

A. the causal variable

B. the response of the subjects

C. X in a regression equation

D. two variables that are correlated

2. What statistic is used to compare two frequency distributions?

A. One Sample Z test

B. Independent Means t-test

C. Regression

D. Chi Square

3. What statistic is used for prediction?

A. One Sample Z test

B. Independent Means t-test

C. Regression

D. Chi Square