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S&P 500 Index ($SPX)

1,650.51-4.84 (-0.29%) 4:52P EDT (INDEX-CFE)
Technical Chart as of Thursday, May 23rd, 2013 View Help

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Studies Support Parameters  
How to Remove an Indicator How to Change Indicator Parameters Study Size:
Moving Average, Simple (200)
Period:
Period: The period for which to compute the indicator.

A simple moving average (SMA) is the unweighted mean of the previous n data points. For example, a 10-day simple moving average of closing price is the mean of the previous 10 days\' closing prices.

In all cases a moving average lags behind the latest price action, simply from the nature of its smoothing. An SMA can lag to an undesirable extent, and can be influenced too much by old prices dropping out of the average.

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