MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Retail price data for n = 60 hard disk drives were recently reported in a computer magazine. Three variables were recorded for each hard disk drive:
y = Retail PRICE (measured in dollars)
x1= Microprocessor SPEED (measured in megahertz)
(Values in sample range from 10 to 40)
x2 = CHIP size (measured in computer processing units)
(Values in sample range from 286 to 486)
A first-order regression model was fit to the data. Part of the printout follows:
Analysis of Variance
SOURCE
DF
MS
F VALUE
PROB>F
MODEL
2
34593103.008
17296051,504
19.018
0.0001
ERROR
57
51840202.926
909477.24431
C TOTAL
59
86432305.933
ROOT MSE
953.66516
3197.96667
R-SQUARE
0.4002
0.3792
DEP MEAN
CV.
ADJ R-SQ
29.82099
Test to determine if the model is adequate for predicting the price of a computer. Use a = .01.
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Transcribed Image Text:Retail price data for n = 60 hard disk drives were recently reported in a computer magazine. Three variables were recorded for each hard disk drive: y = Retail PRICE (measured in dollars) x1= Microprocessor SPEED (measured in megahertz) (Values in sample range from 10 to 40) x2 = CHIP size (measured in computer processing units) (Values in sample range from 286 to 486) A first-order regression model was fit to the data. Part of the printout follows: Analysis of Variance SOURCE DF MS F VALUE PROB>F MODEL 2 34593103.008 17296051,504 19.018 0.0001 ERROR 57 51840202.926 909477.24431 C TOTAL 59 86432305.933 ROOT MSE 953.66516 3197.96667 R-SQUARE 0.4002 0.3792 DEP MEAN CV. ADJ R-SQ 29.82099 Test to determine if the model is adequate for predicting the price of a computer. Use a = .01.
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