Sample estimates of predictive power in N-way discriminant analysis are likely to be subject to a strong upward bias. This bias occurs because the discriminant technique tends to fit the sample data ...

Collin J. Watson, Approaches for the Interpretation of Multiple Discriminant Analysis in Organizational Research, The Academy of Management Review, Vol. 7, No. 1 (Jan., 1982), pp. 124-132 ...

The new variables with canonical variable scores in canonical discriminant analysis have either pooled within-class variances equal to one (Std Pooled Variance) or total-sample variances equal to one ...