# Table of Contents

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The ignorance of the statistical methods can lead to mistakes and misinterpretations. Unfortunately, understanding of these methods is far from common. Many college majors require a course in probability theory and mathematical statistics, but all many of us remember from these courses is horror and/or frustration at complex mathematical formulas filled with Greek letters, some of them wearing hats.

## 7: Multidimensional Data - Analysis of Structure

“Data Mining”, “Big Data”, “Machine Learning”, “Pattern Recognition” phrases often mean all statistical methods, analytical and visual which help to understand the structure of data. Data might be of any kind, but it is usually multidimensional, which is best represented with the table of multiple columns a.k.a. variables and rows a.k.a objects. So more traditional name for these methods is “multivariate data analysis” or “multivariate statistics”.