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Seasonality or seasonal variation is typically caused by factors related to

1. weather, holiders and cuatoms of people

2.economic conditions such as the "business crele"

3. supplier demands

4 . natural variation

question34.Cyclical variation is typically caused by factors related to.

1. weather, holidays and customs of people

2. economic conditions such as the "business cycle"

3.supplier demands

4. natural variation

Question 35 The "Laws" of Forecasting indicate the following

1. Forecasts are almost always correct by some amount

2. Forecasts for the long term tend to be more accurate

3.Forecasts for groups of products or services tend to be more accurate.

4. Forecasts for groups of products or services tend to be less accurate.