This script easily shows in an indicator window the Average True Range % of Price, which helps people understand the volatility of an asset in % terms defined by custom MA periods for custom ATR periods.
The MA Period gives the average price.
The ATR Period gives the average range.
The Average Range / Average Price = Average Range % of Price.
Understanding the volatility of an asset can help people manage risk e.g. if an asset has a low entry cost, but very high volatility it may be more risky than another asset with a high entry cost, but much lower volatility.