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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C. ITSworks is a large computer discount store that sells computers and ancillary equipment and
software in the town where State University is located. LTSworks has collected historical data
on computer s+es and printer sales for the past 10 years as follows.
Personal Computer Sales
1045
Year
Printers Sold
1
326
1610
510
860
296
478
4
1211
975
305
6.
1117
506
7
1066
612
8.
1310
560
1517
590
10
1246
676
i.
Develop a linear regression model for these data and forecast printer demand in year 11
if 1,300 computers are sold.
ii.
Develop a linear trend line forecast to forecast printer demand in year 11.
iii.
Compare the forecasts developed in parts (i) and (ii) and indicate which one appears to
be more accurate.
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Transcribed Image Text:C. ITSworks is a large computer discount store that sells computers and ancillary equipment and software in the town where State University is located. LTSworks has collected historical data on computer s+es and printer sales for the past 10 years as follows. Personal Computer Sales 1045 Year Printers Sold 1 326 1610 510 860 296 478 4 1211 975 305 6. 1117 506 7 1066 612 8. 1310 560 1517 590 10 1246 676 i. Develop a linear regression model for these data and forecast printer demand in year 11 if 1,300 computers are sold. ii. Develop a linear trend line forecast to forecast printer demand in year 11. iii. Compare the forecasts developed in parts (i) and (ii) and indicate which one appears to be more accurate.
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