A Level Biology Revision "Continuous Variation and Standard Deviation" @Freesciencelessons

Uploaded August 2023 | Updated September 2026, 2 days ago

You can find all my A Level Biology videos fully indexed at freesciencelessons.co.uk/a-level-revision-videos/a-level-biology

In this video, we look at continuous variation and standard deviation. First we look at the two different types of variation, which are continuous variation and discontinuous variation. We then explore how to calculate standard deviation and what standard deviation tells us about the amount of variation present.

Image credits:

Bacillus cereus
commons.wikimedia.org/wiki/File:Bacillus_cereus_SEM-cr.jpg
Mogana Das Murtey and Patchamuthu Ramasamy, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Zebra
commons.wikimedia.org/wiki/File:Zebra_Botswana_edit.jpg
Taken & submitted by Paul Maritz (PaulmazModified by Pharaoh Hound, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons

Ash tree
commons.wikimedia.org/wiki/File:Ash_Tree_-_geograph.org.uk_-_590710.jpg
Brian Green / Ash Tree

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