5. In time-series analysis, it is assumed that demand can be broken down into components of average _________.

		tendency
		cycle
		episode
		none of the above

6. The difference between actual and forecast demand is formally referred to as the forecast _________.

		difference
		flexion
		mean
		none of the above

7. In the moving average time series, we assume cycle components are present.

True

False

8. A cause and effect model between demand and other variables is a qualitative method used for as the causal forecasting method.

True

False