Chapter 11

Chi-Square and Other Non-Parametric Tests

LEARNING OBJECTIVES

After studying this chapter, you should be able to

  • recognize the advantage and disadvantages of non-parametric statistical tests

  • learn how a non-parametric statistical test is conducted when —variables are measured on a nominal scale, and —measurements are of independent nature.

  • test significant association between categorical variables.

People can be divided into three groups: those who make things happen, those who watch things happen, and those who wonder what happened.

—John W. Newbern

An approximate answer to the right problem is worth a good deal more than an exact answer to an approximate problem.

—John Tukey

11.1 INTRODUCTION

A variety of statistical tests ...

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