Biology A-Level
Control of variables
What Control of variables means in Biology A-Level, as defined for OCR.
Definition of Control of variables
Check what you remember
Read the wording for your board, then hide it and explain Control of variables in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Controlling confounding variables such as temperature, light intensity or handling so the response can be attributed to the stimulus.
Topics that use Control of variables
- Use of apparatus and techniques (OCR A-Level)
Related terms
- Accuracy of observation transferred to paper
- Accurate reading of scales and menisci
- Annotation as recorded evidence
- Apparatus selection
- Calibration of the eyepiece graticule
- Clarity and convention in biological drawing
- Colorimetry and calibration
- Computer modelling
Using Control of variables in the exam
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