Business Statistics

Chapter 13 | Hypothesis Testing for Categorical Data (Chi-Square Test) 453

Statistical tests that do not require any prior information about the

population are termed as non-parametric tests. This chapter focuses

on only c

2

(chi-square) distribution and the related c

2

test. c

2

distribu-

tion is the family of curves with each distribution being dened by

the degree of freedom associated to it.

c

2

test can be used for a variety of purposes. c

2

test provides a

platform that can be used to ascertain whether the theoretical prob-

ability distribution coincides with the empirical sample distribution.

This is commonly known as c

2

goodness-of-t test. ...