Develop the three-week moving average forecasts for this time series. (Round your answers to two decimal places.)WeekTime SeriesValueForecast118211316410 Incorrect: Your answer is incorrect.517 Incorrect: Your answer is incorrect.615 Incorrect: Your answer is incorrect. Compute MSE. (Round your answer to two decimal places.)MSE

Three-week moving average forecast

Step-by-step explanation:

Given

Solving (a): Three-week moving average forecast

This is calculated as:

Since it is three-week, we start from t = 3

For t = 3; we consider months 1, 2 and 3

For t = 4; we consider months 2, 3 and 4

For t = 5; we consider months 3, 4 and 5

So, the forecast are:

Solving (b): MSE

To do this, we simply calculate the square of the forecast error

The forecast error (E) is:

So, we have:

Forecast error                                                     The square

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !