Biology A-Level
standard deviation
What standard deviation means in Biology A-Level, as defined for AQA.
Definition of standard deviation
Check what you remember
Read the wording for your board, then hide it and explain standard deviation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A measure of how widely individuals are spread around the mean.
Topics that use standard deviation
- Evolution may lead to speciation (A-level only) (AQA A-Level)
Related terms
- allele frequency change
- allopatric speciation
- causes of change
- common ancestry
- competition for resources
- continuous variation
- crossing over
- directional selection
Using standard deviation in the exam
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