Periods in moving average	4
	Time Period	Demand	Forecast	Error	Error^2
	1	85
	2	85
	3	80
	4	81
	5	97
	6	88
	7	88
	8	86
	9	89
	10	96
	11	92
	12	92
Next period forecast:	13
		MSE
Which moving average is best?

4. What is the forecast for the 13th period based on the four-period moving average? Round your answer to two decimal places.

fill in the blank 5

5. What is the MSE for the four-period moving average? Round your answer to two decimal places.