In General,if the Variance of the Difference Scores Increases,what Will

Multiple Choice

In general,if the variance of the difference scores increases,what will happen to the value of the t statistic?

A) It will increase (move farther toward the tail of the distribution) .
B) It will decrease (move toward 0 at the center of the distribution) .
C) It will stay the same; the t statistic is not affected by the variance of the difference scores.
D) It may increase or may decrease; there is no consistent relationship between variance and the size of the t statistic.