学习Minitab时遇到问题求解?
例题:某工程师想了解5种元素对一种溶剂纯度的影响,其每批原料可以制造4管溶剂,为消除批号差异对试验结果的影响,决定将实验分为4个块(每批原料1块),创建5因子、4块、16次运行的实验,使用1/2 fraction分析,解析度Ⅳ,以下为结果
Fractional Factorial Design
Factors: 5 Base Design: 5, 16 Resolution with blocks: III
Runs: 16 Replicates: 1 Fraction: 1/2
Blocks: 4 Center pts (total): 0
NOTE Blocks are confounded with two-way interactions.
Design Generators: E = ABCD
Block Generators: AB, AC
Alias Structure
I + ABCDE
Blk1 = AB + CDE
Blk2 = AC + BDE
Blk3 = BC + ADE
A + BCDE
B + ACDE
C + ABDE
D + ABCE
E + ABCD
AD + BCE
AE + BCD
BD + ACE
BE + ACD
CD + ABE
CE + ABD
DE + ABC
问题一:为什么Block的解析度为Ⅲ?
问题二:Alias Structure以下的矩阵怎么解释,虽然表达出是16次实验,但何以看出A、B、C、D、E的+、-组合是怎样通过这16个式子区分的?
受累大家?
Fractional Factorial Design
Factors: 5 Base Design: 5, 16 Resolution with blocks: III
Runs: 16 Replicates: 1 Fraction: 1/2
Blocks: 4 Center pts (total): 0
NOTE Blocks are confounded with two-way interactions.
Design Generators: E = ABCD
Block Generators: AB, AC
Alias Structure
I + ABCDE
Blk1 = AB + CDE
Blk2 = AC + BDE
Blk3 = BC + ADE
A + BCDE
B + ACDE
C + ABDE
D + ABCE
E + ABCD
AD + BCE
AE + BCD
BD + ACE
BE + ACD
CD + ABE
CE + ABD
DE + ABC
问题一:为什么Block的解析度为Ⅲ?
问题二:Alias Structure以下的矩阵怎么解释,虽然表达出是16次实验,但何以看出A、B、C、D、E的+、-组合是怎样通过这16个式子区分的?
受累大家?
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