When creating a quantitative forecast, data should be evaluated to detect for a repeating pattern of demand from year to year, or over some other time interval, with some periods of considerably higher demand than others.$$

This is known as a $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_?$

When creating a quantitative forecast, data should be evaluated to detect for a repeating pattern of demand from year to year, or over some other time interval, with some periods of considerably higher demand than others.$$

This is known as a $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_?$

Trend Variation

Random Variation

Seasonal Variation

Cyclical Variation