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Using the basic formula derived above (6), the general formula for first-order exponential smoothing (7) is determined by taking both trend and seasonal variations into account. Here, the basic value, the trend value and the seasonal index are calculated as displayed in formulae (8) - (10). Below is a legend for the formulae. 
- Formula for Calculating the Reorder Level Forecast...
- Formula for Calculating the Safety Stock Forecast ...
- Formula for Evaluating the Forecast
- Model: Second-Order Exponential Smoothing Forecast...
- General Formula for First-Order Exponential Smooth...
- Model: Constant Forecast Formulae
- Model: First-Order Exponential Smoothing Forecast ...
- Model: Weighted Moving Average Forecast Formulae
- Model: Moving Average Forecast Formulae
- Forecast Formulae Overview
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