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Product research A scientific research institute
studies a product. There are three factors that affect the control
indicators. A total of 85 samples of the data corresponding to the control
indicators of the three factors are collected, and their mathematical models
are made and plotted by regression analysis. The data are as follows: First
dimension second dimension third dimension key indicators 20
34
-2.9
66.9
20
56
-2.8
65.7
20
53
-2.8
65.2
10
52
-2.8
65.4
10
48
-2.8
66.7
10
47
-2.8
67.2
10
45
-2.8
71.4
10
45
-2.8
73.4
10
44
-2.8
72.4
50
42
-2.8
64
50
41
-2.8
61.5
50
37
-2.8
62
50
37
-2.8
63.5
50
32
-2.8
64.4
40
26
-2.8
65.2
40
28
-2.7 61.5
40
47
-2.6
60.7
40
44
-2.6
62.2
40
43
-2.6
59.7 30
41
-2.6
58
30
38
-2.6
59
30
37
-2.6
61.2
30 37
-2.6
63.5
30
36
-2.6
64.7
30
35
-2.6
65.4
20
34
-2.6
62.2
20
32
-2.6
60.5
20
31
-2.6
60.5
20
28
-2.6
59
20
22
-2.6
57.7
20
23
-2.5
57.7
10
35
-2.4
57.7
10
33
-2.4
59.5
10
32
-2.4
60.7
10
31
-2.4
63.2
10
30
-2.4
63.7
10
29
-2.4
66.7
50
28
-2.4
82.4
50
27
-2.4
83.4
50
27
-2.4
83.1
50
27
-2.4
83.4
50
25
-2.4
84.6
50
25
-2.4
86.3
50
22
-2.4
87.3
50
17
-2.4 88.6
50
16
-2.3
88.8
50
25
-2.2
89.8
40
24
-2.2
90.1 40
23
-2.2
89.3
40
22
-2.2
86.1
40
21
-2.2
88.1
40 20
-2.2
86.3
40
20
-2.2
84.9
40
20
-2.2
82.4
40
18
-2.2
81.6
40
16
-2.2
81.1
30
16
-2.2
81.1
30
14
-2.2
81.1
30
11
-2.2
82.1
30
19
-2.1
84.1
30
18
-2.1
86.8
30
17
-2.1
88.8
30
16
-2.1
89.8
30
15
-2.1
91.6
30
13
-2.1
89.1
30
11
-2.1
90.8
20
12
-2
90.1
20
12
-2
88.6
20
12
-2
90.3
20
12
-2
87.1
20
11
-2 86.3
20
11
-2
85.4
20
11
-2
84.1
20
10
-2
82.4 20
10
-2
81.1
20
9
-2
80.9
10
9
-2
81.4
10 9
-2
82.4
10
8
-2
85.4
10
9
-1.9
87.8
10
8
-1.9
89.6
10
8
-1.9
88.6
10
7
-1.9
89.6
10
6
-1.8
88.8
10 6 -1.8 88.6 |