LESSON NOTES
What this lesson covers
Test with realistic costs and execution, including an out-of-sample period.
01
Write entry, stop, target, and invalidation before price moves.
02
Separate backtests from forward tests.
03
Measure both outcomes and rule-following discipline.
Hands-on exercise
Apply the lesson in Market Watch; this is not a quiz.
Define a test plan with in-sample, forward, and stop criteria.
Review questions
Answer first, then open the explanation.
1Explain “Backtests, forward tests, sample size, and overfitting” in your own words.View answerHide answer
Answer: A good answer should define the core idea, give one relevant example, and state at least one limitation.2Give one chart or platform example where this lesson matters.View answerHide answer
Answer: Use a concrete symbol, timeframe, or platform action and explain how it changes a trading decision.3Name one condition where the idea should not be used by itself.View answerHide answer
Answer: State one missing confirmation, data limitation, or risk condition that would require an additional check.
Complete the exercise and review the answers before marking this lesson complete.
Education only. Trading involves risk; use a demo account while learning.