# Volatility Measure the rate of price movement, regardless of direction. This is generally based on a change in the highest and lowest historical prices. They provide useful information about the range of buying and selling that take place in a given market and help traders determine points where the market may change direction. * **Bollinger bands (Lagging):** Used to measure the "highness" or "lowness" of the price, relative to previous trades. * **Average True Range (Lagging):** The indicator does not provide an indication of price trend, simply the degree of price volatility. * **Standard Deviation (Lagging):** Used to measure expected risk and determine the significance of certain price movements. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.yummyprofit.com/indicator-and-strategy/volatility.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.