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What is a sales forecast?
A prediction of future sales volume or sales revenue, often based on past data and expected market conditions.
What is extrapolation?
Using historical data to identify and extend an existing trend to predict future sales.
What is time series analysis?
The analysis of past sales data recorded at regular intervals to identify patterns and trends that can help forecast future sales.
Types of variation
trend = long-term direction; seasonal = recurring time-of-year pattern; cyclical = economic/business cycle; random = unpredictable fluctuations.