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For
One Set of Control Samples
, you need to specify the
variables
that define the analysis groups and then enter the values of the analysis variables that define the group to be used as the control in the
Control Levels
parameter field. Samples belonging to the control group are used to compute the reference level for each gene.
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The
Multiple Sets of Control Samples
option enables you to calculate different reference levels for different groups of samples. You need to specify the variables that define the analysis groups, and then enter a subset of those variables as
Variables Defining Control Sets
to specify which groups of samples within the analysis groups should be used for computing the reference levels. The values that indicate the controls of the variables that define the control sets should be entered in as
Control Levels
. See the Help for the
Variables Defining Control Sets
for more detail.
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Specifying
Summary Statistic Over All Samples
uses all samples to compute the reference level for each gene or row.
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