Suppose that you work for a U.S. senator who is contemplating writing a bill that would...

Suppose that you work for a U.S. senator who is contemplating writing a bill that would put a national sales tax in place. Because the tax would be levied on the sales revenue of retail stores, the senator has asked you to prepare a forecast of retail store sales for year 8, based on data from year 1 through year 7. The data are:

(c1p8)	Year	Retail Store Sales
	1	$ 1,225
	2	1,285
	3	1,359
	4	1,392
	5	1,443
	6	1,474
	7	1,467

Use the naive forecasting model presented in this chapter to prepare a forecast of retail store sales for each year from 2 through 8.
Prepare a time-series graph of the actual and forecast values of retail store sales for the entire period. (You will not have a forecast for year 1 or an actual value for year 8.)
Calculate the MAPE for your forecast series using the values for year 2 through year 7. (please show how to plug in Excel)

Expert Solution

Under Naive method, forecast value is the last period's actual value. Please see the table below. Second last column contains the forecast. The last column contains the excel formula used to get the forecast values.

The plot is shown below:

jeff jeffy answered 2 weeks ago

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