The second edition of this book provides a conceptual understanding of analysis of variance. It outlines methods for analysing variance that are used to study the effect of one or more nominal variables on a dependent, interval level variable. The book presumes only elementary background in significance testing and data analysis.

One-Way Analysis of Variance, All Categories

Two groups

A t-test for the difference between two means. The fundamental ideas of analysis of variance can be understood better if we first consider in some detail the case in which the explanatory variable has only two categories. In this case the data consist of two groups of ...

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