To determine how large Cook’s D is…



To determine where a Cook’s D value falls in the F Distribution

Calc ( Probability Distributions ( F

Select Cumulative Probability

Enter numerator degrees of freedom: (k + 1), number of predictors + the constant)

Enter denominator degrees of freedom: (n – (k+1)), number of observations – (number of predictors + constant)

Select Input Column, and enter the name of the column where Cook’s D is located (something like COOK1)

The left column in the output are the Cook’s D values, and the right column indicates the percentile of the F distribution where each value falls.

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