研究生课件---SAS第三讲 方差分析.ppt

* * Analysis of Variance Procedure Level of --------------Y-------------- A N Mean SD 1 12 10 2 2 12 4 0 3 12 7 0 Level of --------------Y-------------- B N Mean SD 1 12 6 2 2 12 7 3 3 12 7 2 Level of --------------Y-------------- C N Mean SD 1 12 6 2 2 12 7 3 3 12 7 2 Level of --------------Y-------------- D N Mean SD 1 12 6 2 2 12 7 3 3 12 7 2* * 例5.6 5种防护服(cloth)，有5个人(person)个在不同的5天(date)中穿着，测定脉搏数。如表5.5所示。试验就5种防护服对脉搏数有无作用。 上表可见，5种防护服在5个不同的日期和5个不同的受试者各出现一次；在同一日期和不同受试者5种防护服各不相同。 * * 例5.6 data ex6; do date=1 to 5; do person=1 to 5; input cloth $ x @@; output; end; end; cards; A 129.8 B 116.2 C 114.8 D 104.0 E 100.6 B 144.4 C 119.2 D 113.2 E 132.8 A 115.2 C 143.0 D 118.0 E 115.8 A 123.0 B 103.8 D 133.4 E 110.8 A 114.0 B 98.0 C 110.6 E 142.8 A 110.6 B 105.8 C 120.0 D 109.8 ; proc anova; class date person cloth; model x=date person cloth; run; * * SAS分析结果 Analysis of Variance Procedure Class Level Information Class Levels Values DATE 5 1 2 3 4 5 PERSON 5 1 2 3 4 5 CLOTH 5 A B C D E Number of observations in data set = 25 *