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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The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995.
Year
Retail Sales
85.851
108.426
141.781
6.
169.256
12
202.297
15
222.266
Let S(t) be the retails sales in billions of dollars in t years since 1995. A linear model for the data is
F(t)
9.44t + 84.182.
220
210-
200
190
180
170
160-
150
140
130
120
110
100
90
12
15
80
Use the above scatter plot to decide whether the linear model fits the data well.
O The function is not a good model for the data
OThe function is a good model for the data.
Estimate the retails sales in the U. S. in 2012.
billions of dollars.
Use the model to predict the year that corresponds to retails sales of S235 billion.
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Transcribed Image Text:The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. Year Retail Sales 85.851 108.426 141.781 6. 169.256 12 202.297 15 222.266 Let S(t) be the retails sales in billions of dollars in t years since 1995. A linear model for the data is F(t) 9.44t + 84.182. 220 210- 200 190 180 170 160- 150 140 130 120 110 100 90 12 15 80 Use the above scatter plot to decide whether the linear model fits the data well. O The function is not a good model for the data OThe function is a good model for the data. Estimate the retails sales in the U. S. in 2012. billions of dollars. Use the model to predict the year that corresponds to retails sales of S235 billion.
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