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Question

The Anorexia data file on the book's website shows weight change for anorexic teenage girls who were randomly assigned to one of three psychological treatments (cognitive or family therapy and a control treatment). Use software to analyze these data. (The change scores are in the last three columns of the data set. Alternatively, the website also contains a data set that shows the data in "long" format, with the treatment in one column and the change score in another column.)

State and check the assumptions for the test in part b.

Solution

VerifiedAnswered 1 year ago

Answered 1 year ago

Step 1

1 of 5We need to check the assumptions for a one-way ANOVA test.

The assumptions for a one-way ANOVA test are:

- Independent random samples.
- Populations are normally distributed.
- Populations have the same standard deviation.

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