Answer:
The forecasted sale for the month of November is $1,675.
Explanation:
A moving average can be described as a series of averages of different subsets that is calculated from the full data set.
Using the 4-period moving averages to calculate the forecasted sale of ice cream in the month of November therefore implies the average of sale of ice cream in the 4 months preceding November. And these 4 months are July, August, September, and October.
Therefore, we have:
Forecasted sale for the month of November = (Sales in July + Sales in August + Sales in September + Sales in October) / 4 = ($2,200 + $1,800 + $1,500 + $1,200) / 4 = $6,700 / 4 = $1,675