Find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted value by following the prediction procedure summarized in Figure 10-5.
1. Global Warming Find the best predicted temperature for a recent year in which the concentration (in parts per million) of CO2 is 370.9. Is the predicted temperature close to the actual temperature of 14.5° (Celsius)?
CO2
|
314
|
317
|
320
|
326
|
331
|
339
|
346
|
354
|
361
|
369
|
Temperature
|
13.9
|
14
|
13.9
|
14.1
|
14
|
14.3
|
14.1
|
14.5
|
14.5
|
14.4
|
2.Costs of Televisions Find the best predicted quality score of a Hitachi television with a price of $1900. Is the predicted quality score close to the actual quality score of 56?
Price
|
2300
|
1800
|
2500
|
2700
|
2000
|
1700
|
1500
|
2700
|
Quality Score
|
74
|
73
|
70
|
66
|
63
|
62
|
52
|
68
|
Q1068
Find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted value by following the prediction procedure summarized in Figure 10-5.
1. Baseball Listed below are statistics from seven baseball teams. The statistics consist of the proportions of wins and the result of this difference: Difference = (number of runs scored) - (number of runs allowed) for a recent year. Find the best predicted winning proportion for San Diego, which has a difference of 52 runs. Is the predicted proportion close to the actual proportion of 0.543?
Diffrence
|
163
|
55
|
-5
|
88
|
51
|
16
|
-214
|
Wins
|
0.599
|
0.537
|
0.531
|
0.481
|
0.494
|
0.506
|
0.383
|
2.Crickets and Temperature Find the best predicted temperature (in F) at a time when a cricket chirps 3000 times in one minute. What is wrong with this predicted value?
Chirps in 1 Min
|
882
|
1188
|
1104
|
864
|
1200
|
1032
|
960
|
900
|
Temperature (°F)
|
69.7
|
93.3
|
84.3
|
76.3
|
88.6
|
82.6
|
71.6
|
79.6
|
Q1068
Find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted value by following the prediction procedure summarized in Figure 10-5.
1. Brain Size and Intelligence Find the best predicted IQ score of someone with a brain size of 1275 cm3.
Brain Size
|
965
|
1029
|
1030
|
1285
|
1049
|
1077
|
1037
|
1068
|
1176
|
1105
|
IQ
|
90
|
85
|
86
|
102
|
103
|
97
|
124
|
125
|
102
|
114
|
2. Ages of Best Actresses and Actors Find the best predicted age of the Best Actor at
the time that the age of the Best Actress is 75 years.
Best Actress
|
|
|
|
|
|
|
26
|
80
|
42
|
29
|
33
|
35
|
45
|
49
|
39
|
34
|
26
|
25
|
33
|
35
|
35
|
28
|
30
|
29
|
61
|
|
Best Actor
|
|
|
|
|
|
|
|
51
|
32
|
42
|
54
|
52
|
37
|
38
|
32
|
45
|
60
|
46
|
40
|
36
|
47
|
29
|
43
|
37
|
38
|
45
|
|