Exponential Smoothing


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Exponential Smoothing - short version

Recent data points are weighted more, with weighting declining exponentially as data becomes older.



Exponential Smoothing - long version

Exponential smoothing is a technique that can be applied to time series data, either to produce smoothed data for presentation, or to make forecasts. The time series data themselves are a sequence of observations. The observed phenomenon may be an essentially random process, or it may be an orderly, but noisy, process. Whereas in the simple moving average the past observations are weighted equally, exponential smoothing assigns exponentially decreasing weights over time.



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