STAT368 Lecture Notes - Probability Plot, European Credit Transfer And Accumulation System, Analysis Of Variance
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5 Apr 2014
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All of this generalizes to the 2 factorial, in which factors are investigated, each at two levels. To easily write down the estimates of the e ects, and the contrasts, we start with a table of signs, done here for = 3. Label the rows (1), then the product of with (1). Then all products of with the terms which are already there: (1) = with the terms which are already there. (this is the standard order. ) Start with 2 = 8 + s under the i, then alternate. S and + s, then in groups of 2, nally (under. Then all products of: in groups of 4 (= 2 products under the interaction terms. I a b c ab ac bc abc (1) + Interpretation: assign the appropriate signs to the combinations (1) These are all of the form trast in the sums (1) The sums of squares are all on 1 d. f. (including.