GCSE Biology Revision "Correlating Risk Factors"

Click Here For Free Revision Questions: https://www.freesciencelessons.co.uk/... In this video, we look at how scientists link together a risk factor with a non-communicable disease. To do this, they use a process called epidemiology. We explore how this works and look at the idea of correlation. We then explore problems with sampling. Music credit: Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/...) Source: http://incompetech.com/music/royalty-... Artist: http://incompetech.com/ Image credits: Cigarette in ashtray By © 2005 by Tomasz Sienicki [user: tsca, mail: tomasz.sienicki at gmail.com] - Photograph by Tomasz Sienicki / Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index... Lung cancer By Emmanuelm at en.wikipedia, CC BY 3.0, https://commons.wikimedia.org/w/index... Sausage CC BY-SA 3.0, https://commons.wikimedia.org/w/index...