The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. Year Retail Sales 0 3 6 9 12 15 Let y be the retail sales in billions of dollars in a years since 1995. A linear model for the data is Y = 9.44x + 84.182. 220- 210- 200 190 180 170- 160- 150 140- 130- 120 110- 100- 90 804 85.851 108.426 141.781 169.256 202.297 222.266 3 12 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. The function is not a good model for the data Estimate the retails sales in the U. S. in 2016. billions of dollars. Use the model to predict the year in which retails sales will be $238 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 0 3 6 9 12 15 Let y be the retail sales in billions of dollars in a years since 1995. A linear model for the data is Y = 9.44x + 84.182. 220- 210- 200 190 180 170- 160- 150 140- 130- 120 110- 100- 90 804 85.851 108.426 141.781 169.256 202.297 222.266 3 12 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. The function is not a good model for the data Estimate the retails sales in the U. S. in 2016. billions of dollars. Use the model to predict the year in which retails sales will be $238 billion.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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
0
3
6
9
12
15
220-
210-
200-
190
180-
170-
160
150
140-
130-
120-
110
100-
90
804
Let y be the retail sales in billions of dollars in a years since 1995. A linear model for the data is
Y = 9.44x + 84.182.
85.851
108.426
141.781
169.256
202.297
222.266
3
6
9
12
15
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.
The function is not a good model for the data
Estimate the retails sales in the U. S. in 2016.
billions of dollars.
Use the model to predict the year in which retails sales will be $238 billion.
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