Chapter 6: Analysing the Data |

## Chi-SquareUp to this point, all of our discussion of statistical procedures has been focused on the analysis of "quantitative" data. But some of the variables in behavioural research are not quantitative. Instead, they are "qualitative" in nature. A qualitative variable is one where the possible "measurements" are not measurements as such but quantities or frequencies of things that occur in categories. Religious affiliation, gender, or which brand of dishwashing detergent you prefer are examples. A very useful test for this type of data is the The tests involving the use of 2 are usually considered as part of the branch of nonparametric statistics since we examine the statistics of category membership (nominal or ordinal measurement) rather than the statistics of means and standard deviations (interval or ratio measurement). The assumption of normality is not required in 2 tests. |

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