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weighted moving average

   Also found in: Dictionary/thesaurus, Medical, Financial, Wikipedia 0.01 sec.
weighted moving average [¦wād·əd ¦müv·iŋ ′av·rij]
(statistics)
A method used for smoothing data in a time series in which each observation being averaged is given a weight which reflects its relative importance in calculating the average.


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A weighted moving average puts more weight on recent data and less weight on older data.
gif" alt="" width="480" /></span> Red: Simple Moving Average (SMA)<br> Blue: Exponential Moving Average (EMA)<br> Green: Smoothed Moving Average (SMMA)<br> Violet: Linear Weighted Moving Average (LWMA)
Within the systems analysis framework, there are three specific programs we can institute that are highly cost-effective in hematology: the use of retained patient specimens, weighted moving averages of red cell indices, and clinical quality control.
 
 
 
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