Learn: Experimental Design Principles
OCR H420 A-Level Biology
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Match the items on the left with their correct pairs on the right
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What is the main purpose of experimental design?
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The {{blank0}} variable is what you change, while the {{blank1}} variable is what you measure.
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Why is a control group necessary in an experiment?
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Which of the following are key principles of experimental design? (Select all that apply)
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