he following data are for calculator sales in units at anelectronics store over the past nine​ weeks:
                                                                           Â
Week | Sales | Week | Sales |
1 | 4444 | 6 | 5757 |
2 | 4545 | 7 | 6565 |
3 | 4646 | 8 | 5555 |
4 | 5151 | 9 | 6464 |
5 | 5757 | | |
Use trend projection with regression to forecast sales forweeks
10minus−13.
What are the error measures​ (CFE, MSE,
sigmaσ​,
​MAD, and​ MAPE) for this forecasting​ procedure? How about
r squaredr2​?
Obtain the trend projection with regression forecast forweeks
10minus−13.
​(Enter your responses rounded to two decimal​ places.)
Period | ​Forecast, Bold Upper F Subscript tFt |
10 | nothing |
11 | nothing |
12 | nothing |
13 | nothing |
Obtain the error measures.
CFE: MSE:   sigmaσ: MAD: MAPE:
Find the coefficient of determination (R squared)
R squared =
