The t Test A t test for matched groups trades ____ for
A)fewer degrees of freedom; reduced variability due to extraneous variables.
B)more degrees of freedom; reduced rate of Type 1 error.
C)increased variability due to extraneous variables; higher rate of Type 2 error.
D)a smaller t observed; a smaller t critical.

Question

Quizplus · Accepted Answer

A t test for matched groups uses fewer degrees of freedom because the groups are matched or paired, reducing variability due to extraneous variables.

The T Test a T Test for Matched Groups Trades