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Engineering, a company that specializes in the construction of antipollution filtration devices, has recorded the following sales record over the last 9 years: Year 1987 1988 1989 1990 1991 1992 1993 1994 1995 Sales (x 100,000) 13 15 19 21 27 35 47 49 97   a)      Plot these data with suitable scale and define shape. b)      Develop the linear estimating equation that best describes these data, and plot this line on the graph from part (a).

Engineering, a company that specializes in the construction of antipollution filtration devices, has recorded the following sales record over the last 9 years: Year 1987 1988 1989 1990 1991 1992 1993 1994 1995 Sales (x 100,000) 13 15 19 21 27 35 47 49 97   a)      Plot these data with suitable scale and define shape. b)      Develop the linear estimating equation that best describes these data, and plot this line on the graph from part (a).

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Q, 1:

 

Environtech Engineering, a company that specializes in the construction of antipollution filtration devices, has recorded the following sales record over the last 9 years:

Year

1987

1988

1989

1990

1991

1992

1993

1994

1995

Sales (x 100,000)

13

15

19

21

27

35

47

49

97

 

a)      Plot these data with suitable scale and define shape.

b)      Develop the linear estimating equation that best describes these data, and plot this line on the graph from part (a).

c)      Develop the second-degree estimating equation that best describes these data, and plot this curve on the graph from part (a).

d)      Does the market to the best of your knowledge favor (b) or (c) as the more accurate estimating method?

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