Affiliate & risk disclosure: This article is educational only and may contain a third-party affiliate link. Trading involves risk and you can lose money. Nothing here is financial or investment advice.
Trading charts are full of mathematical relationships: percentages, price changes, ratios, volatility, probability and position sizing. Understanding those concepts does not guarantee profitable trading, but it can help people read chart information more clearly.
Risk-to-reward ratios
A risk-to-reward ratio compares the amount at risk with a possible target. For example, risking 1 unit to pursue 2 units is written as 1:2. The ratio alone does not tell you whether a trade is good; probability, costs and market conditions still matter.
Percent change and volatility
Percent change helps compare price moves across assets with different prices. Volatility describes how widely prices move over time. Larger movement can mean larger opportunity, but it can also mean larger risk.
Probability is not certainty
Even a setup that performed well historically can fail in the future. Backtests and examples are not guarantees.
For adults who want a visual charting toolset, see the VIP Algos listing on our Recommended Resources page. It is presented as a third-party educational/charting resource, not as a promise of trading results.
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