So I finished my stats final today. The 3 questions asked resulted in 27 pages of answers, and I think I did pretty well. Here are some things on which we were tested:

• starplots
• biplots
• principle components analysis (PCA)
• exploratory factor analysis (EFA)
• computing the variance of a set of principle component scores (stupid eigenvalues)
• explaining why fitting an EFA model to original data is the same as fitting it to the standardized data
• finding the Fisher direction and standardizing it to unit length, then finding the related Fisher ratio
• finding the value of the Fisher ratio along the first PCA direction
• finding within group variance/covariance matrices
• computing posterior probabilities using the Bayes formula and the normality pdf’s.

ALSO THIS.

Freaking awesome!

I think my favorite’s the non-primes.