Psychology A-Level
estimation as a check on calculation
What estimation as a check on calculation means in Psychology A-Level, as defined for OCR.
Definition of estimation as a check on calculation
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Read the wording for your board, then hide it and explain estimation as a check on calculation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Rounding each score to the nearest ten and taking the difference gives an estimate that should land close to the exact value, and when it does not the arithmetic is at fault.
Topics that use estimation as a check on calculation
- D.0 – arithmetic and numerical computation (OCR A-Level)
Related terms
- anomalous scores
- decimal conversion
- fractions and ratios
- percentage change
- percentage of a total
- pie chart angles
- reporting a mean with spread
- standard form notation
Using estimation as a check on calculation in the exam
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