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chap 16 terms - chi-square distribution The theoretical...

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Chapter 16 New Terms and Concepts The following terms were introduced in this chapter. You should be able to define or describe each term and, where appropriate, describe how each term is related to other terms on the list. parametric statistical test: A test evaluating hypotheses about population parameters and making assumptions about parameters. Also, a test requiring numerical scores. non-parametric statistical test: A test that does not test hypotheses about parameters or make assumptions about parameters. The data usually consist of frequencies. expected frequencies: Hypothetical, ideal frequencies that are predicted from the null hypothesis. observed frequencies: The actual frequencies that are found in the sample data. chi-square statistic: A test statistic that evaluates the discrepancy between a set of observed frequencies and a set of expected frequencies.
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Unformatted text preview: chi-square distribution: The theoretical distribution of chi-square values that would be obtained if the null hypothesis was true. chi-square test for goodness of fit: A test that uses the proportions found in sample data to test a hypothesis about the corresponding proportions in the general population. chi-square test for independence: A test that uses the frequencies found in sample data to test a hypothesis about the relationship between two variables in the population. phi-coefficient: A correlational measure of relationship when both variables consist of exactly two categories. A measure of effect size for the test for independence. Cramér’s V: A modification of the phi-coefficient to be used when one or both variables consist of more than two categories....
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