13-4. Continued Alternative 2 ①D-D)(D-D) D-D)P $90$147$-57 $3,249 3$974.70 160147 13 169 84.50 200147 53 2,809 561.80 √1621=$40.26=a Alternative 3 D D-D (D-D (D-D)P $80$172$-92 $8464 4$3,38560 200172 28 784 9200 400172+228 51984 15.19840 8,97600 8,976=$9474=σ Rank by Coefficient of Variation Coefficient of Variation(V)=Standard Deviation/Expected value 40.26 Alternative 2 =.274 147 $26.83 Alternative 1 =.298 94.74 Alternative 3 172 CopyrightC 2005 by The McGray-Hill Companies, Inc.Copyright © 2005 by The McGraw-Hill Companies, Inc. S-484 13-4. Continued Alternative 2 D D (D− D) 2 (D − D) P (D D) P 2 − $ 90 $147 $–57 $3,249 .3 $ 974.70 160 147 +13 169 .5 84.50 200 147 +53 2,809 .2 561.80 $1,621.00 1,621 = $40.26 = Alternative 3 D D (D− D) 2 (D − D) P (D D) P 2 − $ 80 $172 $–92 $ 8,464 .4 $3,385.60 200 172 +28 784 .5 392.00 400 172 +228 51,984 .1 5,198.40 $8,976.00 8,976 = $94.74 = Rank by Coefficient of Variation Coefficient of Variation (V) = Standard Deviation/Expected Value V Alternative 2 .274 147 40.26 = Alternative 1 .298 90 $26.83 = Alternative 3 .551 172 94.74 =