11-7. The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in °F) for that month. The past year's usage and temperatures are in the following table: Usage/ 1000 Usage/ 1000 Month Temp. Month Temp. Jan. 21 185.79 July. 68 621.55 Feb. 24 214.47 Aug. 74 675.06 Mar. 32 288.03 Sept. 62 562.03 Apr. 47 424.84 Oct. 50 452.93 May 50 454.58 Nov. 41 369.95 June 59 539.03 Dec. 30 273.98 (a) Assuming that a simple linear regression model is appro- priate, fit the regression model relating steam usage (y) to the average temperature (x). What is the estimate of o²?
11-7. The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in °F) for that month. The past year's usage and temperatures are in the following table: Usage/ 1000 Usage/ 1000 Month Temp. Month Temp. Jan. 21 185.79 July. 68 621.55 Feb. 24 214.47 Aug. 74 675.06 Mar. 32 288.03 Sept. 62 562.03 Apr. 47 424.84 Oct. 50 452.93 May 50 454.58 Nov. 41 369.95 June 59 539.03 Dec. 30 273.98 (a) Assuming that a simple linear regression model is appro- priate, fit the regression model relating steam usage (y) to the average temperature (x). What is the estimate of o²?
MATLAB: An Introduction with Applications
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Transcribed Image Text:11-7. The number of pounds of steam used per month by a
chemical plant is thought to be related to the average ambient
temperature (in °F) for that month. The past year's usage and
temperatures are in the following table:
Usage/
1000
Usage/
1000
Month Temp.
Month
Temp.
Jan.
21
185.79
July.
68
621.55
Feb.
24
214.47
Aug.
74
675.06
Mar.
32
288.03
Sept.
62
562.03
Apr.
47
424.84
Oct.
50
452.93
Мay
50
454.58
Nov.
41
369.95
June
59
539.03
Dec.
30
273.98
(a) Assuming that a simple linear regression model is appro-
priate, fit the regression model relating steam usage (y) to
the average temperature (x). What is the estimate of o²?
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