For the Following Data Showing Actual Demand and Forecasted Demand

Q25: The difference between the forecast and actual

Q26: Using many periods of data in a

Q27: All of the following assume no trend

Q28: Random variation is caused by chance events

Q29: What is the forecast in period 2

Q31: The forecast error for a period is

Q32: Describe r,r²,and the standard error of the

Q33: Seasonal demand is measured in time periods

Q34: With a moving average,what will be the

Q35: A seasonal index for a given month