# Forecasts and actual sales of MP3 players at Just Say Music are as follows: a. Plot the data and provide insights about the time series. b. What is the forecast for November, using a two-period moving average? c. What is the forecast for November, using a three-period moving average? d. Compute MSE for the two- and three-period moving average models

Forecasts and actual sales of MP3 players at Just Say Music are as follows:

a. Plot the data and provide insights about the time series.

b. What is the forecast for November, using a two-period moving average?

c. What is the forecast for November, using a three-period moving average?

d. Compute MSE for the two- and three-period moving average models and compare your results.

e. Find the best number of periods for the moving average model based on MSE.

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5th edition

**Authors:** David Alan Collier, James R. Evans

**ISBN:** 978-1285451374