Question: Consider the following computer output for one replicate of a 2 4 factorial experiment. (a) What effects are used to estimate error? (b) Calculate the
Consider the following computer output for one replicate of a 24factorial experiment.
(a) What effects are used to estimate error?
(b) Calculate the entries marked with €œ?€ in the output.
Estimated Effects and Coefficients Effect Coef SE Coef Term Constant 35.250 39.26 0.000 2.250 24.75012.375 13.78 0.000 1.000 0.500 0.56 0.602 10.750 5.375 5.99 0.002 A*B -10.500 -5.250 -5.85 0.002 A*C 4.250 2.125 2.37 0.064 -5.000 - 2.500 A*D -2.78 0.039 B*C 5.250 2.625 2.92 0.033 B*D 4.000 2.000 2.23 0.076 -0.750 -0.375 C*D -0.42 0.694 S = 3.59166 Analysis of Variance Source DF MS A 0.266 1 2450.252450.25189.940.000 0.310.602 4.00 4.00 462.25 462.25 35.830.002 AB 441.00 441.00 34.190.002 AC 72.25 72.25 5.600.064 AD 100.00 100.00 7.750.039 1. 110.25 110.25 8.550.033 BD 64.00 64.00 4.960.076 2.25 2.25 CD 0.170.694 Residual Error ? 64.50 Total ? 3791.00 ABCAAA
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