sphericity

Would like to take this opportunity to point out that Mauchly's Test of Sphericity tests the null hypothesis that the error covariance matrix of the orthonormalized transformed dependent variables is proportional to an identity matrix.

yes, indeed!

chart means absolutely nothing but katharine was terribly brilliant and created it first. pretty colours! very mod art.

kind of looks like underground map on crack.

one more week of delirium...