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I don't get how you figure out if any of the predictors are significant or why. How do you come up with the alpha figures? Any help is GREATLY appreciated!!

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- Dec 12th 2010, 01:17 PMSculthorpSignificance Tests of the Regression Model.
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I don't get how you figure out if any of the predictors are significant or why. How do you come up with the alpha figures? Any help is GREATLY appreciated!! - Dec 12th 2010, 01:24 PMpickslides
What level of significance are you after?

Have a look in the column labelled "p Value", are any of these values less than your preferred level of significance? - Dec 12th 2010, 01:31 PMSculthorpQuote:

What level of significance are you after?

Answer:

3 predictors, 15 observations, ŷ = 657.053 + 5.7103x1 − 0.4169x2 − 3.4715x3, F = 8.96 with p = .0027, x1 signifcant at α = .01, x3 signifcant at α = .05

So the P value for x1 is less than .01 and the P value for x3 is less than .05.. but where did those preferred level of significance come from? - Dec 13th 2010, 07:30 AMGuy
There's usually an implicit assumption that you make decisions at a .95 significance level.