Question: In a time series data, last 4 weeks sales values, in the order of most recent to oldest are $29, $30, $28 and $26. What

In a time series data, last 4 weeks sales values, in the order of most recent to oldest are $29, $30, $28 and $26. What is the sales forecast for the 5th week using the 3 weeks moving average time series forecasting model?

a. 29.25

b.28

c. 30

d. 29

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