Sample size

In plain English

Metrics on small samples are noise. Decide the minimum before you look, so the data cannot decide it for you.

Example

Expectancy over 20 trades tells you very little; over 100 it starts to inform.

See also

• Expectancy
• Backtest

Used in these lessons

• Chart Patterns and What They Are Not
• Demo Accounts and Paper Trading
• Building a Review Routine
• Journaling and Metrics