BOLL indicator cashback forex also called Eastforexcashback B cashbackforexbtcs indicator "BolingerBands", the founder of John Bollinger, a practical technical analysis indicator Bollinger Bands is based on the principle of standard deviation in statistics designed a relatively practical technical indicators reference Bollinger Bands to buy and sell. Bollinger, a practical technical analysis indicator Bollinger Bands is based on the principle of standard deviation in statistics designed to be a relatively practical technical indicators reference Bollinger Bands for buying and selling, not only can indicate support, pressure levels, showing overbought, oversold areas, and then indicate the running trend, but also to effectively avoid the usual technical traps of the main force - more or less induced, the operation of a higher win rate, especially for swing operations Generally speaking, the Bollinger Bands are composed of three tracks, the upper, middle and lower, but if the switch parameter is set to 1, the graph will be represented by four forexcashbackcalculators where the upper and lower tracks are located at the outermost part of the channel, which are the pressure line (Up line) and support line (Down line) of the trend; the middle one, that is, the middle track, is the average East forex cashback line Most of the time, prices always run in a band consisting of the upper and lower tracks, and automatically adjust with price changes. And with the change in price and automatically adjust the position of the track and the width of the band can be seen in the magnitude of price changes, the wider the greater the price change Bollinger Bands indicator formula: 1. Calculate MAMA = the last N cumulative closing price / N period 2. Calculate MDMD = square root (the last N cumulative (closing price - MA) * (closing price - MA) / N) 3. Calculate MB, UP, and DNMB = I-1 period MAUP = MB + 2 * MDDN = MB-2 * MD Bollinger Bands line indicator theoretical principles: 1, the price from down up through the Down line, can be considered a buy signal 2, the price from down up through the middle line, it is possible to accelerate upward, is the signal to buy additional positions 3, the price fluctuations between the middle line and Up line run for the long market, can hold more or increase the code 4, the price for a long time in the middle line and Up line between the run, from up to down below the middle line for the sell signal 5, the price in the middle line and Down line downward fluctuations between the run for the short market, can hold short or add throw Bollinger Channel line indicator operating techniques: 1, when the price is always along the Bollinger Channel steady upward, the strong characteristics are particularly obvious, it may be worthwhile to pull back in the rail as a low-absorption buy point, and to the rail As an important stop-loss line, with the 4, 9, 18-day average system as a reference 2, if the price breaks the upper Bollinger 3 days or punch out the upper rail too much, while transactions, positions can not be continuously enlarged, be wary of the risk of retracement to confirm the opposite, when the price falls out of the lower Bollinger, more active long and short exchange, accompanied by transactions, positions continue to enlarge, the price is always hovering, it is likely to form the bottom of the phase