Experimental Design - Math Site
Experimental Design - Math Site
Experimental Design - Math Site
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(poor choice)We could just take the first 4 runs (where x 1 is always –1),but then x 1 doesn’t vary. Can we pick the 4 runs so that all ofthe x i terms vary?(good choice)x 1 x 2 x 3-1 -1 1-1 1 -1Note: each x i varies andno columns are identical1 -1 -11 1 1CEI Inc.