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Chi-Square Distribution

Chi-Square Distribution

Chi-Square Distribution:

The square of a random variable having standard normal distribution is distributed as chi-square with 1 degree of freedom. The sum of squares of ´n´ independently distributed standard normal variables has a Chi-Square distribution with ´n´ degrees of freedom. The distribution is typically used to compare multiple-sample count data in contingency tables to expected values under a null hypothesis.

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Courses Using This Term

Categorical Data Analysis
This course will teach you the analysis of contingency table data. Topics include tests for independence, comparing proportions as well as chi-square, exact methods, and treatment of ordered data. Both 2-way and 3-way tables are covered.
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