ATR (Average True Range)
ATR measures volatility as the average size of the daily price range over a period, usually 14 candles.
Also known as: average true range
The true range of a candle is the largest of its high minus low and the gaps from the previous close, so it counts overnight jumps. ATR averages it, giving a price-based measure of how far a coin typically moves in a day.
Traders use it to set stops (a multiple such as 2x ATR below entry) and to size positions so that a volatile coin gets a smaller one. Read the ATR guide.