KA 2: experimentation: experimental design: confounding variables Flashcards

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1
Q

due to the complexities of biological systems, other variables besides the independent variable..

A

..may affect the dependent variable

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2
Q

why must confounding variables be held constant if possible, or at least monitored?

A

so that their effect on the results can be accounted for in the analysis

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3
Q

when can a randomised block design be used?

A

in cases where confounding variables cannot easily be controlled

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4
Q

describe the distribution of randomised blocks of treatment and control groups

A

they’re distributed in such a way that the influence of any confounding variable is likely to be the same across the treatment and control groups

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