Perform shifted log2 transformation:

If the data in the Input SAS Data Set is not log-transformed, but log- transformation is needed for normalization or ANOVA, then choose the appropriate stage at which it should be done.

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Before normalization applies log-transformation before normalization.

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Before ANOVA applies log-transformation after normalization, but before ANOVA.

To Specify When Transformation Should Be Conducted:

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Ensure that the Input data is log-transformed box (if available) is not checked.

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Left-click the radio button corresponding to your choice.