Beginning R pp 217-228 | Cite as

Chi-Square Tests

  • Larry Pace


You learned about the chi-square distribution when we discussed confidence intervals for the variance and standard deviation in Chapter 8. Another contribution of Karl Pearson, the chi-square distribution has proven to be quite versatile. We use chi-square tests for determining goodness of fit and for determining the association or lack thereof for cross-tabulated categorical variables.


Contingency Table Standard Normal Distribution Blood Type Expected Frequency Migraine Sufferer 
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© Larry Pace 2012

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  • Larry Pace

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