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Graphical Analysis of Variance (Graphical ANOVA) This set of slides ...

Graphical Analysis of Variance (Graphical ANOVA) This set of slides ...

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Does paper type have an effect on mean distance?<br />

Let ¯X = the grand mean <strong>of</strong> the flight distances.<br />

If paper type has no effect on distance, then<br />

√ n( ¯X i − ¯X)<br />

and the errors will both have mean 0 and the same<br />

variance.<br />

(Why do we need to subtract the grand mean?)<br />

23

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