Its a sample size of 4000 and electoral polls are smaller than that 1k or 3k

frobozz · on Jan 24, 2019

sample size is irrelevant if the selection criteria are poor.

gamblor956 · on Jan 24, 2019

If the sample size is large enough the selection criteria doesn't matter.

alasdair_ · on Jan 25, 2019

Take a sample of 5000 random people (an enormous sample size) attending the Republican National Convention and ask them which party they will vote for.

jonas21 · on Jan 24, 2019

I guess that's technically true, but only if your sample size is 100%. :-)

kolinko · on Jan 25, 2019

There were examples of very large polls that failed spectacularly because of the badly chosen samples

https://www.math.upenn.edu/~deturck/m170/wk4/lecture/case1.h...

naniwaduni · on Jan 24, 2019

The issue isn't with sample size.

The sample is almost certainly biased, we just don't necessarily know how much and in what direction.

gdix · on Jan 24, 2019

> The issue isn't with sample size.