Part IIIMultiple Proportions and Means: The X2- and F-Distributions

Chapters 28–32 expand from comparing the sample proportions of two groups to comparing the sample proportions of multiple groups.

A bar graphical representation where frequency is plotted on the y-axis on a scale of 0–300 and sum of three squared random values from the z-distribution (X2) on the x-axis on a scale of 1–more.

Chapter 33 uses variance ratios to compare variances for scaled data.

Chapters 34 and 35 use variance ratios to expand from comparing the sample means of two groups to comparing the sample means of multiple groups.

A bar graphical representation for 10,000 sample variance ratios, where frequency is plotted on the y-axis on a scale of 0–1200 and sample variance rations (F) on the x-axis on a scale of 0.1–more.

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