data on retail price and energy cost for 10 large side-by-side refrigerators is reproduced in the table below. Using excel answer the following questions. a. Give the equation of a straight-line model relating retail price y to energy cost x. b. Using excel estimate the slope and y-intercept of the line. Paste the results from excel. c. Write the equation of the least squares line. d. Use the least squares line to predict the retail price of a refrigerator with an energy cost of $80 per year.
data on retail price and energy cost for 10 large side-by-side refrigerators is reproduced in the table below. Using excel answer the following questions. a. Give the equation of a straight-line model relating retail price y to energy cost x. b. Using excel estimate the slope and y-intercept of the line. Paste the results from excel. c. Write the equation of the least squares line. d. Use the least squares line to predict the retail price of a refrigerator with an energy cost of $80 per year.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Show all calculations, do not use excel. Regression analysis questions.
Transcribed Image Text:correlation coefficient r. Show all the calculations.
X
74
77
81
88
93
Y
30
30
22
32
37
Transcribed Image Text:The data on retail price and energy cost for 10 large side-by-side refrigerators is
in the table below. Using excel answer the following questions.
reproduced
a. Give the equation of a straight-line model relating retail price y to energy cost x.
b. Using excel estimate the slope and y-intercept of the line. Paste the results from excel.
c. Write the equation of the least squares line.
d. Use the least squares line to predict the retail price of a refrigerator with an energy cost of $80
per year.
Brand
Maytag MTB2156B
Amana TR21V2
Kenmore (Sears) 7820
Whirlpool Gold GT22DXXG
GEProfile TBX22PRY
KitchenAid Prestige KTRP22KG
Whirlpool ET21PKXG
GE TBX22ZIB
Frigidaire Gallery FRT20NGC
Hotpoint CTX21DIB
Price ($)
850
760
900
870
1100
800
650
750
750
570
Energy Cost per
Year ($)
48
54
58
66
77
66
70
81
72
78
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