Differences

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--- technical_indicators:bollinger_bands [2019/09/07 00:21]
betseyp [Bearish Bollinger Band Crossover]
+++ technical_indicators:bollinger_bands [2020/09/28 16:49]
betseyp
@@ Line 21: / Line 21: @@
 {{:technical_indicators:bollinger_bands:cs-bbands.xls?linkonly|Click here to download this spreadsheet example.}}
-**Bollinger Bands consist of a middle band with two outer bands.** The middle band is a [[:technical_indicators:moving_averages|simple moving average]] that is usually set at 20 periods. A simple moving average is used because the standard deviation formula also uses a simple moving average. The look-back period for the standard deviation is the same as for the simple moving average. The outer bands are usually set 2 standard deviations above and below the middle band.
+**Bollinger Bands consist of a middle line with two outer bands.** The middle line is a [[:technical_indicators:moving_averages|simple moving average]] that is usually set at 20 periods. A simple moving average is used because the standard deviation formula also uses a simple moving average. The look-back period for the standard deviation is the same as for the simple moving average. The outer bands are usually set 2 standard deviations above and below the middle band.
 {{:technical_indicators:bollinger_bands:bbs-1-spyexam.png|Bollinger Bands - Chart 1}}