The Chi-Square statistic aids in the assessment of the null hypothesis that the frequencies of each category deviate from one another in the way observed purely by chance. Alternatively, there is a rhyme and reason to the present deviations. Depending on the Chi-Square statistic calculated, we can reject or not reject the null hypothesis. Provide this calculator with a number of categories of interest and then supply it with some observed frequencies per category. The calculator will produce the Chi-Square and its interpretaion.
O = observed frequency
E = expected frequency
| O | E | O-E | (O-E)2* | (O-E)2/E* |
|---|
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