A strong evaluation names one real limitation in the method, explains how it affects the conclusion, and proposes a specific improvement. It stays within what the method and data show. This appears at the end of fieldwork questions, including those on unseen or invented investigations.
It follows linking a conclusion to the aim in fieldwork analysis and evaluation.
How do you build an evaluation point?
Use a four-link chain for each point.
- Limitation: what in the method is weak, such as sample size or timing.
- Effect: how that weakness could affect the result or the conclusion.
- Improvement: the specific change, with numbers where possible.
- Benefit: how the change would make the evidence more reliable.
Each link refers to the method on the page, not to events you cannot show. When you want to suggest a reason, word it as a possibility.
Worked example
The invented investigation counted pedestrians at seven sites for ten minutes on one day. Its method is on the page, so the limitation can be drawn from it.
Limitation: each site was counted once, for ten minutes, on one day.
Effect: one count may not represent a normal day, so the pattern could change on another day. The anomaly at site E could not be checked.
Improvement: count three times at each site, at set times, on a weekday and a weekend, then use the mean for each site. That gives 7 sites × 3 counts = 21 counts on each day type, instead of 7.
Benefit: the mean of several counts reduces the effect of a single unusual count, so the line of best fit is more reliable. If site A gave 84, 90 and 78, the mean would be (84 + 90 + 78) ÷ 3 = 252 ÷ 3 = 84.
Written version: “The evidence is limited because each site was counted once, for ten minutes. Counting three times at each site on a weekday and a weekend, then using the mean, would reduce the effect of one unusual count and make the trend more reliable.”
Notice that nothing in the answer claims anything happened in the field that the data did not show.
What mistake costs marks?
A common mistake is to invent an event to explain a weakness.
Mistaken answer: “It rained heavily at site F, so fewer people were counted, and the equipment broke.”
Unless these were recorded, they are made-up observations.
The improvement is also missing. The correction is to base the point on the method, such as one count per site, and to propose a repeatable change. If rain were recorded in the notes, you could mention it as a recorded condition.
Check yourself
All data is invented.
1. A student interviewed 10 people about shop use. Name one limitation and a specific improvement.
Show answer
The sample of 10 is small, so it may not represent shoppers generally. Improve by interviewing 50 people at different times of day, using a set rule for choosing who to ask.
2. Why is “I should have collected more data” a weak improvement?
Show answer
It does not say how much, where or why. A specific version names a number and an effect, such as “three counts at each site, using the mean, to reduce the effect of an unusual count”.
3. Rewrite this so it does not invent an observation: “The wind was strong, so my readings were wrong.”
Show answer
For example: “Wind speed was not recorded, so its effect on the readings cannot be judged; recording wind speed alongside each reading would let this be checked.”
Where this leads next
With all five skills in place, test them together in the fieldwork analysis and evaluation practice set. The fieldwork sample and graph planner helps you think about sample size before you collect data.
If you want a teacher to check that your evaluations are specific and stay within the evidence, see our online one-to-one Geography tuition.