Talk:Analysis of variance

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Incorrect formula table[edit]

I think the formula for SSBc is incorrect. There appears to be a bar missing above xcol and I believe the values (squared differences) are scaled by the # of points in the column. The degrees of freedom formula, dfW, also suggests that there are an equal number of rows and columns rather than specifying the degrees of freedom in terms of the # of columns and the # of samples (n-c). Perhaps both could be specified? — Preceding unsigned comment added by JimHokanson (talk • contribs) 15:21, 27 November 2023 (UTC)[reply]

"Fortunately, experience says that high order interactions are rare"[edit]

The above sentence is horribly unscientific (it is found in the subsection "ANOVA for multiple factors"), even though a reference is given. Experience with what? Clearly no one has gained experience with all possible topics in which an ANOVA may be used. The text of the reference is not easily accessed, so it is not possible to check under what conditions this "experience" is applicable. I have marked it with a ^{[verification needed]} to signal that this claim needs to be modified. While it is relevant to the topic, the sentence as presented is false.

Wiki Education assignment: PSY8052-Advanced Statistics II[edit]

This article was the subject of a Wiki Education Foundation-supported course assignment, between 12 January 2022 and 7 May 2022. Further details are available on the course page. Student editor(s): Kleiv006 (article contribs).