Which of the following is a property of the slope,b₁?

A) The slope equals one if X and Y have the same variance.
B) The slope has the same sign as r,the coefficient of correlation.
C) The slope equals one if r equals one.
D) All of these choices are true.

If you want to know if the items on a test assess one and only one dimension,what type of reliability do you use?

A) parallel forms reliability
B) test-retest reliability
C) interrater reliability
D) internal consistency reliability