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Chapter 11: Inference for Distributions of Categorical Data

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Across
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test statistic used to test hypotheses about distributions of categorical data
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when comparing two or more categorical variables, or one categorical variable over multiple groups, we arrange our data in this type of table
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this table summarizes the distribution of a single categorical variable
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the problem of doing many comparisons at once with an overall measure of confidence is the problem of ___
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to test whether there is an association between two categorical variables, use this chi-square test, also called the chi-square test for association/___
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type of a categorical count gathered from a sample of data
Down
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to test whether there is a difference in the distribution of a categorical variable over several populations or treatments, use this chi-square test
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a follow up analysis involves identifying the ___ that contributed the most to the chi-square statistic
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when calculating chi-square statistics, observations should be expressed in these, not percents
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___ of fit test: used to determine whether a population has a certain hypothesized distribution of proportions for a categorical variable
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after conducting a chi-square test, be sure to carry a follow up ___
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specific chi-square distributions are distinguished by ___ of freedom
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type of categorical count that we would see if the null hypothesis were true