15 basic rules for using Bollinger Bands. （英文板）

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15 basic rules for using Bollinger Bands. One of the great joys of having invented an analytical technique such as Bollinger Bands is seeing what other people do with it. While there are many ways to use ' U- W$ w: e) ~: Y+ XBollinger Bands, following are a few rules that serve as a good beginning point. 2 r* ] S& K( v- m3 F, w& J2 W, S

1. Bollinger Bands provide a relative definition of high and low.

 2. That relative definition can be used to compare price action and indicator / M Z" |+ L/ Tto arrive at rigorous buy and sell decisions.

 3. Appropriate indicators can be derived from momentum, volume, sentiment, open interest, inter-market data, etc. 8 k" a0 r( b( R, m$ r( r

4. Volatility and trend have already been deployed in the construction of Bollinger - i |/ T' C3 j2 S1 c" tBands, so their use for confirmation of price action is not recommended. , ?% r* I$ |' |

5. The indicators used for confirmation should not be directly related to one another. ' \0 ^4 h3 p5 \! \6 WTwo indicators from the same category do not increase confirmation. Avoid colinearity.

6. Bollinger Bands can also be used to clarify pure price patterns such as M-type; tops and W-type bottoms, momentum shifts, etc. 8 U. f; g# p6 X7 C7 |' H

7. Price can, and does, walk up the upper Bollinger Band and down the lower Bollinger / b$ C6 q, Q) UBand. + g' y' c) X; C3 Z$ G0 f2 r

8. Closes outside the Bollinger Bands can be continuation signals, not reversal 4 H9 m& a- i {2 y% ssignals--as is demonstrated by the use of Bollinger Bands in some very successful volatility-breakout systems. 8 `0 H9 } u1 j# C ' L. S0 c( a- ^

9. The default parameters of 20 periods for the moving average and standard deviation calculations, and two standard deviations for the bandwidth are just + c8 d7 U. W: b1 dthat, defaults. The actual parameters needed for any given market/task may be 8 O5 O4 l7 ^6 W! j" q5 L, m+ jdifferent. 1 q. X0 G9 i5 a: w

10. The average deployed should not be the best one for crossovers. Rather, it should be descriptive of the intermediate-term trend. $ c, Z+ H1 ^, @- j; G9 a/ M # H! L% P- H- Y# P5 y- M

11. If the average is lengthened the number of standard deviations needs to be 6 c1 n1 {) \ h$ Yincreased simultaneously; from 2 at 20 periods, to 2.1 at 50 periods. Likewise, if the average is shortened the number of standard deviations should be reduced; from 2 at 20 periods, to 1.9 at 10 periods.

12. Bollinger Bands are based upon a simple moving average. This is because a simple moving average is used in the standard deviation calculation and we wish to be logically consistent. a# @" L3 M# I 2 g# D! R2 s: H1 o

13. Be careful about making statistical assumptions based on the use of the standard deviation calculation in the construction of the bands. The sample size in most deployments of Bollinger Bands is too small for statistical significance and the distributions involved are rarely normal. 3 x: Z+ N3 e* l5 S0 a8 U

14. Indicators can be normalized with %b, eliminating fixed thresholds in the process. & z+ T. Z- S$ [ ?: k , q, R% F0 a1 e1 ^

15. Finally, tags of the bands are just that, tags not signals. A tag of the upper Bollinger Band is NOT in-and-of-itself a sell signal. A tag of the lower Bollinger ' Q8 C: ^8 k2 A) lBand is NOT in-and-of-itself a buy signal.

來源 http://www.bollingerbands.com

個人覺得 Bollinger Bands 拿來當基準點的話有點小路用 是蠻不錯的參考指標  但是如果要用來做買進買出的的決定 那就很危險 以上的十五個規則個人覺得蠻中肯的 附上的網址有商業性質 不過也有一些不錯的訊息  如果不妥請板主刪除

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