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his week we're doing one-way ANOVAs. Don't be afraid to give a "wrong" answer. That's why...

his week we're doing one-way ANOVAs. Don't be afraid to give a "wrong" answer. That's why we call it a discussion board!

1. Describe a study where a one-way ANOVA would be appropriate (hint: how many independent variables are there in a one-way ANOVA?). Make sure to tell us your independent and dependent variables.

2. What would you hypothesize in terms of the effect of your IV on your DV on why?

Math   Statistics-And-Probability   
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Answer #1

1)

A chemical engineer wants to compare the hardness of four blends of paint. Six samples of each paint blend were applied to a piece of metal. The pieces of metal were cured. Then each sample was measured for hardness. In order to test for the equality of means and to assess the differences between pairs of means, the analyst uses one-way ANOVA with multiple comparisons.

independent variable - blends of paint

dependent variable - hardness of paint

2)

Method

Null hypothesis

H₀: All means are equal

Alternative hypothesis

H₁: At least one mean is different
Equal variances were assumed for the analysis.
Factor Information

Factor

Levels

Values

Paint

4

Blend 1, Blend 2, Blend 3, Blend 4
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