Homework Answers
the scatter plot shows a positive and linear trend . so there appears to be a,,,,,,,,,
b)
points/game = -19.537+0.126*yards/game
| null hypothesis: Ho: β1= | 0 | |
| Alternate Hypothesis: Ha: β1≠ | 0 | |
| correlation r='Sxy/(√Sxx*Syy) = | 0.854 | |
| test stat t= | r*(√(n-2)/(1-r2))= | 8.98 |
| P value = | 0.0000 | (from excel:tdist(8.9818,30,2) |
reject Ho , there is sufficient evidence of a linear relationship,,,
| option C: Coefficient of determination R2=SSR/SST=0.729 , proportion of variation in points/game... |
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The accompanying data are from a football league for one season. a. Construct a scatter diagram...
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Opening Weekend Box Office Gross ($millions)
55.111
34.124
9.416
6.181
7.71
5.578
5.895
23.917
83.065
102.533
32.862
62.143
24.105
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149.481
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11.472
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28.861
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Online Trailer Views (millions)
Opening Weekend Box Office Gross ($millions)
55.111
34.124
9.416
6.181
7.71
5.578
5.895
23.917
83.065
102.533
32.862
62.143
24.105
19.96
5.005
9.721
4.986
11.059
45.03
34.715
10.232
20.686
25.461
17.497
2.238
3.926
55.386
149.481
4.512
9.113
11.469
12.88
11.472
2.08
1.666
1.816
0.792
0.4
3.985
4.444
3.476
1.652
10.421
1.069
33.085
99.151
1.386
3.904
5.535
9.989
6.637
13.392
55.098
46.803
4.953
3.993
28.861
15.018
4.282
5.937
11.836
9.929
60.033
44.189
82.933
176.137
4.346
7.222
33.811
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