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| The '''mass index''' is an indicator, developed by [[Donald Dorsey]], used in [[technical analysis]] to predict trend reversals. It is based on the notion that there is a tendency for reversal when the price range widens, and therefore compares previous trading ranges (highs minus lows).
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| Mass index for a commodity is obtained<ref>[http://www.incrediblecharts.com/technical/mi_construction.htm Mass Index construction] at IncredibleCharts.com</ref> by calculating its [[moving average (finance)#Exponential moving average|exponential moving average]] over a 9 day period and the exponential moving average of this average (a "double" average), and summing the ratio of these two over a given amount of days (usually 25).
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| : <math>Mass = Sum[25] \; of \; { EMA[9] \; of \; (high-low) \over EMA[9]\,of\,EMA[9] \; of \; (high-low) }</math>
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| Generally the EMA and the re-smoothed EMA of EMA are fairly close, making their ratio is roughly 1 and the sum around 25.
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| According to Dorsey, a so-called "reversal bulge" is a probable signal of trend reversal (regardless of the trend's direction).<ref>[http://www.incrediblecharts.com/technical/mass_index.htm Mass Index] at IncredibleCharts.com</ref> Such a bulge takes place when a 25-day mass index reaches 27.0 and then falls to below 26 (or 26.5). A 9-day prime moving average is usually used to determine whether the bulge is a buy or sell signal.
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| This formula uses intraday range values: not the "true range," which adjusts for full and partial gaps. Also, the "bulge" does not indicate direction.
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| == References ==
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| <references/>
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| {{finance-stub}}
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| {{technical analysis}}
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| [[Category:Technical indicators]]
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Latest revision as of 13:36, 5 May 2014
Hi there, I am Alyson Boon although it is not the title on my birth certificate. Invoicing is my profession. What me and my family adore is to climb but I'm considering on beginning something new. My spouse and I live in Kentucky.
Feel free to visit my blog certified psychics (Highly recommended Web-site)