3 ms·
Standard deviation does not "work" here. What I mean is that for rare 1:10000 diseases 1 patient per population of 100 people is x100 higher rate comparing to 1
by juskrey 7y ago
Standard deviation does not "work" here. What I mean is that for rare 1:10000 diseases 1 patient per population of 100 people is x100 higher rate comparing to 1 patient per city of 10000 people.
Obviously sometimes you have sick people in small villages. The obvious mistake is to calculate the rate per village inhabitant, which is made exactly on the poster.
- Dylan16807 7y agoThat's what I was getting at with "reasonably large population". You're right that for a rare disease 10000 is not enough to make standard deviation work. But when you're talking about "cancer", all of it, it's much more than you need for very strong statistical significance.