Andy compared students' ability to transfer learning from three different Types of instructional materials. He found that there were pre-existing group differences between his conditions. Which of the following is the appropriate analysis technique for Andy to use?
A) Nonindependent t test
B) Independent t test
C) MANOVA
D) ANCOVA

Question

Quizplus · Accepted Answer

ANCOVA (Analysis of Covariance) is the appropriate analysis technique when there are pre-existing group differences between conditions. It allows the researcher to control for the effects of these group differences on the dependent variable, increasing the accuracy of the analysis. ANCOVA is a more powerful technique than a nonindependent or independent t-test because it takes into account the pre-existing group differences. MANOVA (Multivariate Analysis of Variance) is not necessary in this case since there is only one dependent variable being measured.

Andy Compared Students' Ability to Transfer Learning from Three Different