After graduating from Northern Montana College (1967), Cook earned his master's (1969) and Ph.D. (1971) degrees from Kansas State University.
[3] His dissertation, The Dynamics of Finite Populations: The Effects of Variable Selection Intensity and Population Size on the Expected Time to Fixation and the Ultimate Probability of Fixation of an Allele, was supervised by Raj Nassar.
[4] He is the author of several books, including Introduction to Envelopes: Dimension Reduction for Efficient Estimation in Multivariate Statistics[5] and Residuals and Influence in Regression.
[6] In 1982 he was elected as a Fellow of the American Statistical Association.
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