Chapter 7ANOVA Models

DOI: 10.4324/9781003450467-7

Section 7.1 ANOVA Models

Analysis of variance (ANOVA) is a procedure that determines the proportion of variability attributed to each of several components. It is one of the most useful and adaptable statistical techniques available.

In general ANOVA procedures in SPSS produce what is called a Source Table in which each row represents a source of variability and the columns represent what we know about the variability attributable to each source. In the simplest case total variability is split into that attributable to differences between the groups and the variability attributable to differences within the groups.

Normally there is a column called SS (Sum of Squares), one for df (Degrees ...

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