from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A test that uses the chi-square statistic to test the fit between a theoretical frequency distribution and a frequency distribution of observed data for which each observation may fall into one of several classes.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mathematics any
statistical hypothesistest in which the test statistichas a chi-square distributionif the null hypothesisis true
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