## In a CRD with a qualitative factor A at 2 levels and a quantitative factor B at 3 levels, the researcher wants to know if the quadratic tren

Question

In a CRD with a qualitative factor A at 2 levels and a quantitative factor B at 3 levels, the researcher wants to know if the quadratic trend in the mean responses across the levels of factor B differ for the two levels of factor (A). Which of the following contrasts would address this question?

A. L=u31 – 2u32 + u33 + u21 – 2u22 + u23

B. L=u11 – 2u12 + u13 – u21 – 2u22 – u23

C. L=u11 – u12 – u13 – u21 + u22 + u23

D. L=u11 – u12 + u31 – u23

E. None of them appropriate.

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Math
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2021-09-13T07:23:15+00:00
2021-09-13T07:23:15+00:00 1 Answer
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## Answers ( )

Answer: E

Step-by-step explanation:

This because the other options involved 1 but it was not involved in the question, 2 and 3 are supposed to be used.