Moving average

average that is recalculated after every numerical change; method for calculating the value of inventory

Also see moving average (disambiguation).In statistics, a moving average or rolling average is one of a family of similar techniques used to analyze time series data. It is applied in finance and especially in technical analysis. It can also be used as a generic smoothing operation, in which case the raw data need not be a timeseries. A moving average series can be calculated for any time series. In finance it is most often applied to stock prices, returns or trading volumes. Moving averages are used to smooth out short-term fluctuations, thus highlighting longer-term trends or cycles. The threshold between short-term and long-term depends on the application, and the parameters of the moving average will be set accordingly.
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Used in charts and technical analysis, the average of security or commodity prices constructed in a period as short as a few days or as long as several years and showing trends for the latest interval. As each new variable is included in calculating the average, the last variable of the series is deleted.