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education/statistics/Hypothesis Tests.md
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@ -55,7 +55,7 @@ If the p-value is greater than *5*%, fail to reject the null hypothesis.
(Ch 28, stat 1040) (Ch 28, stat 1040)
## Goodness of fit tests ## Goodness of fit tests
This test is used when you have one qualitative var This test is used when you have one qualitative variable with many categories, eg the (color, size, shape) of an (item).
The $\chi^2$ curve does not follow the normal curve. It has a long right hand tail. As the degrees of freedom go up, the curves flatten out, and the hump moves out to the right. The $\chi^2$ curve does not follow the normal curve. It has a long right hand tail. As the degrees of freedom go up, the curves flatten out, and the hump moves out to the right.