Question: 2. Refer to the time series data in exercise 1. Using the average of all the historical data as a forecast for the next period,

2. Refer to the time series data in exercise 1. Using the average of all the historical data as a forecast for the next period, compute the following measures of forecast accuracy.

a. Mean absolute error.

b. Mean squared error.

c. Mean absolute percentage error.

d. What is the forecast for week 7?

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