When determining how well an observed set of frequencies fit an expected set of frequencies, what is the test statistic? A) F-statistic B) t-statistic. C) X² D) z-statistic

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The chi-square (X²) statistic is used to determine how well an observed set of frequencies fits an expected set of frequencies, typically in a chi-square goodness-of-fit test.

When Determining How Well an Observed Set of Frequencies Fit