George W Snedecor was an American mathematician and statistician. He contributed to the foundations of analysis of variance, data analysis, experimental design, and statistical methodology. Snedecor's F-distribution and the George W. Snedecor Award of the American Statistical Association are named after him.William G Cochran was a prominent statistician. He was born in Scotland but spent most of his life in the United States. Cochran studied mathematics at the University of Glasgow and the University of Cambridge. He worked at Rothamsted Experimental Station from 1934 to 1939, when he moved to the United States.

• Preface to the Eighth Edition. Preface to the First Edition.Symbols Frequently Used.Introduction.Frequency Distributions.The Mean and Standard Deviation.The Normal Distribution.Tests of Hypotheses.The Comparison of Two Samples.The Binomial Distribution.Shortcut and Nonparametric Methods.Regression.Correlation.Analysis of Frequencies in One-way and Two-way Classifications.One-way Classifications: Analysis of Variance.Analysis of Variance: The Random Effects Model.Two-way Classifications.Failure in the Assumptions.Factorial Experiments.Multiple Linear Regression.Analysis of Covariance.Nonlinear Relations.Two-way Tables with Unequal Numbers and Proportions.Sample Surveys.Appendix.Index.