What is the typical time frame for seasonal variation (patterns)? Impersible to say typically less than a year. Typically 2 years Typically follows the business, or economiccycle Question 33 Seasonality or seasonal variation is typically caused by factors related to... weather, holidays and customs of people economic conditions such as the "business cycle" supplier demands natural variation Question 34 Cyclical variation is typically caused by factors related to... weather, holidays and customs of people economic conditions such as the "business cycle" supplier demands natural variation