A statistical program is recommended. A certain company produces and sells frozen pizzas to public schools throughout the eastern United States. Using a very aggressive marketing strategy, they have been able to increase their annual revenue by approximately $10 million over the past 10 years. But increased competition has slowed their growth rate in the past few years. The annual revenue, in millions of dollars, for the previous 10 years is shown. Year Revenue 1 8.53 2 10.74 3 12.98 4 14.11 16.21 6 17.21 18.37 8 18.55 9 18.40 10 18.33 K DKO (a) Construct a time series plot. 201 18- 20 201 18 16 16 14 14 12 12 12 10- 10 10- 8 6 41 6 4 21 04 0 1 2 345 6 7 8 9 10 11 0 1 2 3 45 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 0 1 2 3 45 6 7 8 9 10 11 Year Year Year Year

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A statistical program is recommended.
A certain company produces and sells frozen pizzas to public schools throughout the eastern United States. Using a very aggressive marketing strategy, they have been able to increase their annual revenue by approximately $10 million over the past 10 years. But
increased competition has slowed their growth rate in the past few years. The annual revenue, in millions of dollars, for the previous 10 years is shown.
Year
Revenue
1
8.53
10.74
3
12.98
4
14.11
16.21
6
17.21
18.37
18.55
18.40
10
18.33
(a) Construct a time series plot.
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Year
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Comment on the appropriateness of a linear trend.
O The time series plot shows that a linear trend is most appropriate.
O The time series plot shows that a curvilinear trend may be more appropriate.
O The time series plot shows that neither a linear nor a curvilinear trend is appropriate.
Revenue ($ millions)
Revenue ($ millions)
Transcribed Image Text:A statistical program is recommended. A certain company produces and sells frozen pizzas to public schools throughout the eastern United States. Using a very aggressive marketing strategy, they have been able to increase their annual revenue by approximately $10 million over the past 10 years. But increased competition has slowed their growth rate in the past few years. The annual revenue, in millions of dollars, for the previous 10 years is shown. Year Revenue 1 8.53 10.74 3 12.98 4 14.11 16.21 6 17.21 18.37 18.55 18.40 10 18.33 (a) Construct a time series plot. 20 20 20 20 18 18 18 18- 16 16 16 16- 14 14 14 14 12 12 12 10 10 10- 8- 8. 2- 2 2 1 6 7 8 9 10 11 1 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 2 3 5 8 9 10 11 Year Year Year Year Comment on the appropriateness of a linear trend. O The time series plot shows that a linear trend is most appropriate. O The time series plot shows that a curvilinear trend may be more appropriate. O The time series plot shows that neither a linear nor a curvilinear trend is appropriate. Revenue ($ millions) Revenue ($ millions)
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10 11
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Comment on the appropriateness of a linear trend.
O The time series plot shows that a linear trend is most appropriate.
O The time series plot shows that a curvilinear trend may be more appropriate.
O The time series plot shows that neither a linear nor a curvilinear trend is appropriate.
(b) Using Minitab or Excel, develop a quadratic trend equation that can be used to forecast revenue (in millions of dollars). (Round your numerical values to three decimal places.)
T =
(c) Using the trend equation developed in part (b), forecast revenue (in millions of dollars) in year 11. (Round your answer to two decimal places.)
$
million
Revenue ($ millions)
Revenue ($ millions)
Revenue ($ millions)
Revenue ($ millions)
Transcribed Image Text:20 20 20 18 18- 18- 16 16 16- 16- 14- 12 12- 10 10 8 6. 4 4 2. 2 1 2 3 4 5 6 9 10 11 1 2 3 4 5 6 7 9 10 11 1 2 3 4 5 6 7 8 9 10 11 3 4 6 7 8 10 11 Year Year Year Year Comment on the appropriateness of a linear trend. O The time series plot shows that a linear trend is most appropriate. O The time series plot shows that a curvilinear trend may be more appropriate. O The time series plot shows that neither a linear nor a curvilinear trend is appropriate. (b) Using Minitab or Excel, develop a quadratic trend equation that can be used to forecast revenue (in millions of dollars). (Round your numerical values to three decimal places.) T = (c) Using the trend equation developed in part (b), forecast revenue (in millions of dollars) in year 11. (Round your answer to two decimal places.) $ million Revenue ($ millions) Revenue ($ millions) Revenue ($ millions) Revenue ($ millions)
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