A statistical program is recommended. Suppose the following table shows a company's annual revenue (in billions of
Question:
A statistical program is recommended.
Suppose the following table shows a company's annual revenue (in billions of dollars) for 2012 (period 1) to 2017 (period 6).
Year | Period | Sale ($ Billions) |
---|---|---|
2012 | 1 | 1.54 |
2013 | 2 | 1.87 |
2014 | 3 | 2.36 |
2015 | 4 | 3.13 |
2016 | 5 | 3.54 |
2017 | 6 | 4.14 |
(a)
Construct a time-series plot.
A time series has a horizontal axis labeled "Period" with values from 0 to 7 and a vertical axis labeled "Budget ($ billions)" with values from 0 to 4. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect are as follows.
- The segments start at (1, 1.54),
- go down and right through 2 points to (3, 1.36),
- and go up and right through 3 points to stop at (6, 4.14).
A time series has a horizontal axis labeled "Period" with values from 0 to 7 and a vertical axis labeled "Budget ($ billions)" with values from 0 to 4. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect are as follows.
- The segments start at (1, 4.14),
- go down and right through 3 points to (4, 1.36),
- and go up and right through 2 points to stop at (6, 1.54).
A time series has a horizontal axis labeled "Period" with values from 0 to 7 and a vertical axis labeled "Budget ($ billions)" with values from 0 to 4. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect are as follows.
- The segments start at (1, 4.14),
- and go down and right through 5 points to stop at (6, 1.54).
A time series has a horizontal axis labeled "Period" with values from 0 to 7 and a vertical axis labeled "Budget ($ billions)" with values from 0 to 4. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect are as follows.
- The segments start at (1, 1.54),
- and go up and right through 5 points to stop at (6, 4.14).
What type of pattern exists in the data?
The time series plot shows an upward curvilinear trend.The time series plot shows a downward curvilinear trend. The time series plot shows an upward linear trend.The time series plot shows a downward linear trend.
(b) Develop a linear trend equation for this time series. (Round your numerical values to three decimal places.)
Tt =
(c) What is the forecast for sales (in billions of dollars) for period 7? (Round your answer to two decimal places.)
$ billions
Elementary Statistics A Step By Step Approach
ISBN: 978-1259755330
10th edition
Authors: Allan G. Bluman