The data from an experiment with four factors is summarized in the table below.
ID: 3066181 • Letter: T
Question
The data from an experiment with four factors is summarized in the table below. Please specifiy the Mini tab Steps
Estimate the factor effects. Plot the normal probability plot and select the important factors.
Fit the model selected in (a) to a regression equation and analyze the residuals. Is the model adequate?
Change the Response with 1/Response and repeat parts (a) and (b). Was this transformation useful?
Run
Factor 1
Factor 2
Factor 3
Factor 4
Response
1
12
300
10
High
0.00336
2
15
300
10
High
0.00344
3
12
400
10
High
0.00308
4
15
400
10
High
0.00184
5
12
300
15
High
0.00269
6
15
300
15
High
0.00284
7
12
400
15
High
0.00253
8
15
400
15
High
0.00163
9
12
300
10
Low
0.00340
10
15
300
10
Low
0.00362
11
12
400
10
Low
0.00301
12
15
400
10
Low
0.00182
13
12
300
15
Low
0.00280
14
15
300
15
Low
0.00290
15
12
400
15
Low
0.00252
16
15
400
15
Low
0.00160
Run
Factor 1
Factor 2
Factor 3
Factor 4
Response
1
12
300
10
High
0.00336
2
15
300
10
High
0.00344
3
12
400
10
High
0.00308
4
15
400
10
High
0.00184
5
12
300
15
High
0.00269
6
15
300
15
High
0.00284
7
12
400
15
High
0.00253
8
15
400
15
High
0.00163
9
12
300
10
Low
0.00340
10
15
300
10
Low
0.00362
11
12
400
10
Low
0.00301
12
15
400
10
Low
0.00182
13
12
300
15
Low
0.00280
14
15
300
15
Low
0.00290
15
12
400
15
Low
0.00252
16
15
400
15
Low
0.00160
Explanation / Answer
It would be really great to know which Minitab version you are using . However, I am assuming that you are using Minitab 17.
For Regression,go to STAT>ANOVA>GENERAL LINEAR MODEL>FIT GENERAL LINEAR MODEL.
In RESPONSE,select the variable Response by double clicking. Do the same steps in FACTORS.Then
in GRAPHS, SET Residual for plots as Standardised. CLick the normal Probability Plot. Then Click ok.
For doing 1/RESPONSE, GO to calculator. Select a new row. And, in calculation write 1/response and assign this as a formula
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