2**3 (FULL) FACTORIAL DESIGN WITH 3 CENTER POINTS NUMBER OF LEVELS FOR EACH FACTOR = 3 NUMBER OF FACTORS = 3 NUMBER OF OBSERVATIONS = 11 NOTE--THIS IS A 2**3 FULL FACTORIAL DESIGN AUGMENTED BY 3 CENTER POINTS. NOTE--THIS DESIGN ALLOWS-- 1) SIMPLE ESTIMATES OF HYPER-PLANAR PARAMETERS 2) A SIMPLE ESTIMATE OF INTERACTION EFFECTS 3) A SIMPLE CHECK OF CURVATURE EFFECT 4) AN ESTIMATE OF SIGMA (VIA REPLICATION) REFERENCE--BOX, HUNTER & HUNTER, STATISTICS FOR EXPERIMENTERS, PAGE 534 NOTE--IF POSSIBLE, THIS (AS WITH ALL EXPERIMENT DESIGNS) SHOULD BE RUN IN RANDOM ORDER (SEE DATAPLOT'S RANDOM PERMUTATION FILES). NOTE--IN THE DESIGN BELOW, "-1" REPRESENTS THE "LOW" SETTING OF A FACTOR "+1" REPRESENTS THE "HIGH" SETTING OF A FACTOR "0" REPRESENTS A "MIDDLE" SETTING OF A FACTOR NOTE--B1, B2, B3, B12, B13, AND B23 EFFECT ESTIMATES ARE ALL OF THE FORM AVERAGE OF THE "HIGH" - AVERAGE OF THE "LOW" NOTE--TO READ THIS FILE INTO DATAPLOT-- SKIP 50 READ 2TO3WCP.DAT X1 X2 X3 DATE--MAY 1989 X1 X2 X3 ---------- -1 -1 -1 +1 -1 -1 -1 +1 -1 +1 +1 -1 -1 -1 +1 +1 -1 +1 -1 +1 +1 +1 +1 +1 0 0 0 0 0 0 0 0 0