In general,what is the effect of an increase in the variance for the sample of difference scores?
A)an increase in the standard error and an increase in the value of t
B)an increase in the standard error and a decrease in the value of t
C)a decrease in the standard error and an increase in the value of t
D)a decrease in the standard error and a decrease in the value of t

Question

In general,what is the effect of an increase in the variance for the sample of difference scores?​
A)​an increase in the standard error and an increase in the value of t
B)​an increase in the standard error and a decrease in the value of t
C)​a decrease in the standard error and an increase in the value of t
D)​a decrease in the standard error and a decrease in the value of t

Quizplus · Accepted Answer

An increase in the variance of the sample of difference scores leads to an increase in the standard error, which means the scores are more spread out and less reliable. This, in turn, leads to a decrease in the value of t, as the sample means are less likely to represent the true population mean. Therefore, the best choice is B - an increase in the standard error and a decrease in the value of t.

In General,what Is the Effect of an Increase in the Variance