Chapter 13. Chi-Square and Nonparametric Procedures. Going Forward. Your goals in this chapter are to learn: When to use nonparametric statistics The logic and use of the one-way chi square The logic and use of the two-way chi square
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Chi-Square and Nonparametric Procedures
Your goals in this chapter are to learn:
Nonparametric statisticsare inferential procedures used with either nominal or ordinal data.
The one-way chi square test is computed when data consist of the frequencies with which participants belong to the different categories of one variable
H0: all frequencies in the population are equal
Ha: all frequencies in the population are not equal
The two-way chi square procedure is used for testing whether category membership on one variable is independent of category membership on the other variable.
A survey is conducted where respondents are asked to indicate (a) their sex and (b) their preference in pets between dogs and cats. The frequency of males and females making each pet selection is given below. Perform a two-way chi square test.
(39)(35)/104 = 13.125
(65)(39)/104 = 21.875
(39)(69)/104 = 25.875
(65)(69)/104 = 43.125