7.7 Comparing Three or More Population Means: Analysis of Variance (Optional)
Suppose we are interested in comparing the means of three or more populations. For example, we may want to compare the mean SAT scores of three different high schools.Or, we could compare the mean income per hopusehold of residents in four census districts. Since the methods of Section 7.2–7.6 apply to two populations only, we require an alternative technique. In this optional section, we present a method for comparing three or more population means based on independent random samples, called an analsyis of variance (ANOVA).
Biography Sir Ronald A. Fisher (1890–1962)
The Founder of Modern Statistics
At a young age, Ronald Fisher demonstrated special abilities in mathematics, ...
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