Use the above scatter plot to decide whether the linear model fits the data well. O The function is a good model for the data. O The function is not a good model for the data Estimate the retails sales in the U. S. in 2015. billions of dollars. Use the model to predict the year in which retails sales will be $250 billion.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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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
804
Use the above scatter plot to decide whether the linear model fits the data well.
O The function is a good model for the data.
O The function is not a good model for the data
Estimate the retails sales in the U. S. in 2015.
billions of dollars.
Use the model to predict the year in which retails sales will be $250 billion.
Transcribed Image Text: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 12 804 Use the above scatter plot to decide whether the linear model fits the data well. O The function is a good model for the data. O The function is not a good model for the data Estimate the retails sales in the U. S. in 2015. billions of dollars. Use the model to predict the year in which retails sales will be $250 billion.
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
3
108.426
6.
141.781
9.
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
80+
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 3 108.426 6. 141.781 9. 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 80+
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