ANOVA stratum
= ANOVA stratum
{c}
An <ANOVA stratum> is an <orthogonal> response subspace representing one level of experimental variation, such as between blocks or within blocks. In a covariance model scalar on each such subspace, its <eigenvalue> supplies the common variance scale for its projected coordinates. Treatment and residual <sums of squares in ANOVA> must be compared within appropriate strata.