Number of experiments in a set

The total sum of squares has n degrees of freedom associated with it, where n is the total number of experiments in a set. 

A second feature of the book is its emphasis on degrees of freedom. We have tried to remove the magic associated with knowing the source of these numbers by using the symbols n (the total number of experiments in a set), p (the number of parameters in the model), and / (the number of distinctly different factor combinations in the experimental design). Combinations of these symbols appear on the tree to show the degrees of freedom associated with various sums of squares (e.g., n-/for SS ). 

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See also in sourсe #XX -- [ , , ]

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