The Analysis of Variance
The statistical significance of a difference between two means was discussed in earlier chapters. What if there are more than two means to compare? Not infrequently one is confronted with several groups, wondering whether they may all be regarded as samples of the same population, or alternatively whether the groups differ so considerably from one another that the null hypothesis of a common parent population behind all the groups must be rejected.
KeywordsPopulation Variance Variance Ratio Parent Population Unequal Size Common Population
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