When computing a contrast, the sum of the lambda coefficients must equal
A) zero.
B) one.
C) the number of treatment conditions.
D) the F value.

Name: When computing a contrast, the sum of the lambda coefficients must equal A) zero. B) one. C) the number of treatment conditions. D) the F value.
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Question

Quizplus · Accepted Answer

The sum of the lambda coefficients in a contrast must be zero in order to test a meaningful hypothesis. If the sum was not zero, the hypothesis being tested would be unclear and not interpretable.

When Computing a Contrast, the Sum of the Lambda Coefficients