Which of the following is not a rule for conducting orthogonal contrasts? The su

Question

Which of the following is not a rule for conducting orthogonal contrasts?

The sum of weights for a comparison should not be zero.

The group that is singled out in one comparison should be excluded from any subsequent contrasts.

For a given contrast, the weights assigned to the group(s) in one chunk of variation should be equal to the number of groups in the opposite chunk of variation.

If we give a group a weight of zero then this eliminates that group from all calculations.

The sum of weights for a comparison should not be zero.

The group that is singled out in one comparison should be excluded from any subsequent contrasts.

For a given contrast, the weights assigned to the group(s) in one chunk of variation should be equal to the number of groups in the opposite chunk of variation.

If we give a group a weight of zero then this eliminates that group from all calculations.

Explanation / Answer

Answer is B

The group that is singled out in one comparison should be excluded from any subsequent contrast

This is not a rule for conducting orthogonal contrast

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