1.In a linear relationship, as the X scores increase, the Y scores change

A.in only one direction.

B.in the positive and then in the negative direction.

C.only in the positive direction.

D.only in the negative direction.

2.In a regression equation, b stands for the __________ and a stands for the ________.

A.slope; predicted Y score

B.Y intercept; slope

C.slope; Y intercept

D.Y intercept; predicted Y score

3.When the correlation coefficient representing the relationship between X and Y is intermediate, then all of the following are true except

A.all data points fall on the regression line.

B.there is not a perfectly consistent association.

C.there are different Y scores associated with a single X score.

D.prediction of Y from a known X score has some error.