Technical Analysis (Technical Indicators), Market Structure , Bollinger Bands (BB)

Technical Analysis (Technical Indicators)

Chapter: 14 Technical Analysis (Technical Indicators)

Bollinger Bands are indicators that are plotted at standard deviation levels above and below a simple moving average. Since standard deviation is a measure of volatility, a large standard deviation indicates a volatile market, while a smaller standard deviation indicates a calmer market. Bollinger Bands are a good way to compare volatility and relative price levels over a period of time.

Even though Bollinger Bands can help generate buy and sell signals, they are not designed to determine the future direction of a security. Buy and sell signals are not given when prices reach the upper or lower bands. Such levels merely indicate that prices are high or low on a relative basis. A security can become overbought or oversold for an extended period of time. Knowing whether or not prices are high or low on a relative basis can enhance our interpretation of other indicators and assist with timing issues in trading.

An example is illustrated graphically as follows:

Technical Analysis (Technical Indicators)

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