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Chi-squared Test for Frequency Distributions

Chi-squared Test for Frequency Distributions

This is another case in which we set up a null hypothesis and then test the statistical significance of disagreement with it. But now we are concerned with frequency distributions. We compare observed frequencies with corresponding expected frequencies calculated on the basis of a null hypothesis with stated trial assumptions. Then we calculate a quantity which summarizes the disagreement between observed and expected frequencies, and we test whether it is so large that it would not likely occur by chance.

Chi-squared Test for Frequency Distributions.pdf (61.93 KB)

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