Practice Exercise
Calculations: Sums of Squares for Factor A
This value is the foundation
of our estimate of the main effect for Factor A. Remember that when we calculate
main effects, we combine the data across the levels of the "other"
factor.
Formula
Using the sums from the design table, set up the equation.
Proceed with the calculations.
Our next step is to calculate the sums of squares for the main effect for Factor B (Time of Test).
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