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- The mass index is an indicator, developed by , 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). Mass index for a commodity is obtained by calculating its 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 number of days (usually 25). Generally the EMA and the re-smoothed EMA of EMA are fairly close, making their ratio is roughly 1 and the sum around 25. According to Dorsey, a so-called "reversal bulge" is a probable signal of trend reversal (regardless of the trend's direction). 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. This formula uses intraday range values: not the "true range," which adjusts for full and partial gaps. Also, the "bulge" does not indicate direction. (en)
- Индекс массы (MI от англ. mass index) — разработанный Дональдом Дорси (англ. Donald Dorsey) технический индикатор прогнозирующий разворот тенденции на основе анализа ширины диапазона между максимальной и минимальной ценами. (ru)
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- Индекс массы (MI от англ. mass index) — разработанный Дональдом Дорси (англ. Donald Dorsey) технический индикатор прогнозирующий разворот тенденции на основе анализа ширины диапазона между максимальной и минимальной ценами. (ru)
- The mass index is an indicator, developed by , 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). Mass index for a commodity is obtained by calculating its 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 number of days (usually 25). (en)
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- Mass index (en)
- Индекс массы (технический анализ) (ru)
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