Independent variable
What Independent variable means in Biology A-Level, as defined for OCR.
Definitions of Independent variable
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
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Reference: OCR
The factor that is changed, such as light intensity, carbon dioxide concentration or temperature, while the others are controlled.
The variable you chose or controlled, which is placed on the x-axis.
The variable that is deliberately changed in an investigation.
Topics that use Independent variable
- Analysis (OCR A-Level)
- Photosynthesis (OCR A-Level)
- Planning (OCR A-Level)
Related terms
- Dependent variable
- Accessory pigments
- Accurate arithmetic and significant figures
- Carbohydrate synthesis and storage
- Chloroplast ultrastructure
- Compartmentalisation of photosynthesis
- Confounding factors
- Constant, readable scale choice
Using Independent variable in the exam
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