In a contrast analysis, the sum of the contrast weights
A) can vary from -1.00 to +1.00.
B) must equal -l.00.
C) must equal 1.00.
D) must equal zero.

Question

Quizplus · Accepted Answer

The sum of the contrast weights in a contrast analysis must equal zero. This is because contrast analysis is used to compare means and the weights are assigned to reflect the comparison being made, with the requirement that the sum of these weights equals zero to ensure that the comparison is balanced.

In a Contrast Analysis, the Sum of the Contrast Weights