Based on the Drug Store data set, complete the following. (1) Display the least squares line based
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Question:
Based on the Drug Store data set, complete the following.
(1) Display the least squares line based on the scatter plot for the data. (2) In the Excel file, indicate how would you interpret the least squares line? (3) What is the R2 value? (4) How would you interpret the R2 value?
Region | Promote | Sales |
1 | 85 | 88 |
2 | 120 | 106 |
3 | 120 | 105 |
4 | 102 | 112 |
5 | 99 | 88 |
6 | 104 | 106 |
7 | 109 | 113 |
8 | 93 | 89 |
9 | 105 | 95 |
10 | 91 | 90 |
11 | 97 | 102 |
12 | 103 | 104 |
13 | 113 | 112 |
14 | 98 | 83 |
15 | 104 | 110 |
16 | 103 | 98 |
17 | 105 | 112 |
18 | 101 | 116 |
19 | 102 | 87 |
20 | 107 | 101 |
21 | 112 | 115 |
22 | 104 | 99 |
23 | 112 | 96 |
24 | 98 | 100 |
25 | 106 | 95 |
26 | 106 | 108 |
27 | 108 | 105 |
28 | 110 | 108 |
29 | 123 | 122 |
30 | 95 | 84 |
31 | 109 | 104 |
32 | 105 | 100 |
33 | 114 | 104 |
34 | 110 | 107 |
35 | 98 | 94 |
36 | 99 | 102 |
37 | 111 | 115 |
38 | 116 | 107 |
39 | 126 | 114 |
40 | 127 | 123 |
41 | 109 | 97 |
42 | 105 | 83 |
43 | 97 | 95 |
44 | 119 | 111 |
45 | 119 | 106 |
46 | 126 | 116 |
47 | 107 | 107 |
48 | 109 | 101 |
49 | 104 | 111 |
50 | 105 | 90 |
Related Book For
Introduction to Data Mining
ISBN: 978-0321321367
1st edition
Authors: Pang-Ning Tan, Michael Steinbach, Vipin Kumar
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