Parameters | Expression Parameters | Reference Variable to Be Applied as the Baseline

Reference Variable to Be Applied as the Baseline
Use this field to specify one variable as the reference baseline for normalization .
All TMM scaling factors of the other sample variables are derived based on the selected reference baseline.
If this field is left blank , the average (taken after logarithm transformation ) is applied as the reference baseline.
To Specify a Reference Baseline Variable:
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All of the variables in the data set are displayed in the Available Variables field.
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Click to add the highlighted variable to the Reference Variable to be applied as the baseline field, as shown below: