Menu: View→Analysis Properties→Bias→Covariances supplied as input→Unbiased
Specifies that any sample covariances that are read from a data file are unbiased estimates of the corresponding population covariances.
For more information, see the InputUnbiasedMoments method of the AmosEngine class.
Programming
In Amos Graphics programs, you can select this option by using the following statement (Visual Basic):
pd.GetRadioButton("AnalysisPropertiesForm", "OptionInputBias_Unbiased").Checked = True