Chapter 14

Non-Parametric Statistics

Learning Objectives

Upon completion of this chapter, you will be able to:

  • Analyse nominal as well as ordinal level of data
  • Learn relative advantages of non-parametric tests over parametric tests
  • Understand when and how to use the runs test to test randomness
  • Understand when and how to use the Mann–Whitney U test, the Wilcoxon matched-pairs signed rank test, the Kruskal–Wallis test, the Friedman test, and Spearman’s rank correlation
Statistics in Action: Bajaj Electricals ltd

Bajaj Electricals Ltd (BEL) is part of the Rs 200 billion Bajaj group, which is in the business of steel, sugar, two wheelers, and three wheelers besides an impressive range of consumer electrical products. BEL is a 70-year old company ...

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