Exhibit 10-6: Choose the intersubject difference control that best corresponds with the following statements.
-Refer to Exhibit 10-6.Last year's math grades are taken into consideration when analyzing the posttest scores following the use of a new math teaching method.
A) ANCOVA
B) Homogeneous selection
C) Randomized matching
D) Random assignment
E) Use subjects as their own controls

Question

Quizplus · Accepted Answer

ANCOVA (analysis of covariance) is the appropriate choice for controlling for intersubject differences when there is a pre-existing variable (in this case, previous math grades) that is related to the outcome variable (posttest scores). ANCOVA adjusts for these differences by including the pre-existing variable as a covariate in the analysis, allowing for a more accurate comparison of the effects of the new math teaching method.

Exhibit 10-6: Choose the Intersubject Difference Control That Best Corresponds