Level 4 · Lesson 1 / 4 · English
A written trading plan and testable rules
4 min reading · Exercises take additional time
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A strategy is a set of conditions that can be checked consistently, not a slogan such as buy low. A written plan separates observation, entry, invalidation, exit and risk. Its first purpose is to make decisions auditable; writing a plan does not demonstrate that it is profitable.
What you will learn
- Explain a written trading plan and testable rules.
- Work through the stated hypothetical example with explicit units.
- Recognise limitations and apply a documented practice check.
Turn an idea into conditions
An example hypothesis might be that a break of a defined range followed by a completed-bar retest deserves testing. Specify the instrument, timeframe, method for defining the range, what counts as a break and the price event required for a retest. Words such as strong or obvious need an operational definition or two reviewers may label the same chart differently.
The entry rule must state when information becomes available and when an order can be placed. A rule based on a completed hourly candle cannot assume entry at the best price earlier inside that candle. Use executable prices and realistic order timing when testing. An attractive chart example is not evidence of a repeatable advantage.
Build rejection and exit rules too
List conditions that prohibit a trade, including unavailable contract specifications, a failed risk calculation or exposure above the written limit. Include invalidation, target or time-based exits and what happens if data or connectivity fails. Each exception should be recorded; otherwise discretionary overrides can hide behind the strategy’s name.
A plan may contain illustrative limits, but those limits are not recommendations for every learner. Separate a strategy’s signal conditions from the account’s independent risk rules. Keep a version number and change rules only between documented evaluation periods, rather than rewriting the method after every losing example.
Key terms
- Operational definition
- A condition precise enough for another reviewer to apply.
- Entry rule
- The event and timing that authorise an order under a plan.
- Invalidation rule
- The condition that ends the original hypothesis.
Hypothetical worked example · Not live market prices
Testing a hypothetical completed-bar rule
- A range is defined using only observations available before the signal.
- A signal candle closes at 11:00 and the plan requires its completed close.
- An order can be evaluated at or after 11:00, not retrospectively at the candle’s 10:15 low.
| Event | Time | Availability |
|---|---|---|
| Signal candle begins | 10:00 | Incomplete |
| Signal candle closes | 11:00 | Completed information |
| Earliest planned order | At or after 11:00 | Subject to executable prices |
Simplified educational calculations. Costs, slippage and provider-specific adjustments apply where relevant; these are not actual returns.
Common mistakes to avoid
- Using vague adjectives as rules; make their meaning observable.
- Assuming entry before the signal was known; preserve timing.
- Editing losing trades out of the plan; document all qualifying observations.
Lesson summary
A testable plan defines conditions, timing, rejection, exits and risk separately. It makes evaluation possible but does not establish positive expectancy.
Practical exercise
Write five rules for a hypothetical range-retest idea: range definition, entry timing, invalidation, exit and no-trade conditions. Ask whether another learner could apply them without seeing future candles.
Knowledge check
Check your understanding
Results apply to this attempt only and are not saved to a student account. No certificate is issued.
Answer all questions correctly and complete the exercise. Progress follows you between Academy pages for this visit only; it is not saved to an account and resets on reload.
Related lessons
Financial education, not personal investment advice. Leveraged Forex and CFDs can lead to substantial losses. Demo practice and correct quiz answers do not guarantee trading success.