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.
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
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
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
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190
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150
140-
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90
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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: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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