Psychology A-Level
percentage change
What percentage change means in Psychology A-Level, as defined for OCR.
Definition of percentage change
Check what you remember
Read the wording for your board, then hide it and explain percentage change in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The before-and-after difference divided by the original value and multiplied by 100, with the direction of travel, increase or decrease, stated.
Topics that use percentage change
- D.0 – arithmetic and numerical computation (OCR A-Level)
Related terms
- anomalous scores
- decimal conversion
- estimation as a check on calculation
- fractions and ratios
- percentage of a total
- pie chart angles
- reporting a mean with spread
- standard form notation
Using percentage change in the exam
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