# Chi-Square Technique

Chi-Square Technique

Subject: General Sociology

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• A statistical analytic technique used to examine the relationship between two categorical variables. The chi-square (denoted χ2) tests hypotheses about the distribution of observations into categories. The null hypothesis states that the observed frequencies are the same as the expected frequencies. When the observed frequencies are sufficiently different from the expected frequencies, the value of chi-square goes up and the null hypothesis is rejected. However, if the value of the observed frequencies is similar to the value of the expected frequencies, the value of chi-square is small and the null hypothesis is retained.

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