The manual of the American psychologist and mathematician Duncan Kramer examines the methods of statistical data processing used in modern social research. Without dwelling on the basic concepts and criteria known from any initial course of statistics, the author tries in an accessible language, without complex formulas and calculations, to explain the principles of applying factor and cluster analysis, linear and logistic regression, path analysis, variance and covariance analysis, discriminant and, finally, logline analysis. The manual is provided with a preface and comments by the scientific editor, lists of recommended literature in Russian and English, a glossary of statistical terms and an appendix.