It’s actually a relatively large sample size, enough to get an accurate survey, and increasing it further leads to diminishing returns in terms of improved accuracy of the result. You don’t need that many people to get an accurate survey. If you play with a calculator like this one you can see that this sample size for a US population of 340 million people gets you into the region of 99% confidence with a 1.8% margin of error.
It’s actually a relatively large sample size, enough to get an accurate survey, and increasing it further leads to diminishing returns in terms of improved accuracy of the result. You don’t need that many people to get an accurate survey. If you play with a calculator like this one you can see that this sample size for a US population of 340 million people gets you into the region of 99% confidence with a 1.8% margin of error.
Fair enough! It’s been a very long time since I took stats haha
But is that sanple diverse enough to reflect the overall demographics of that total 340 million? Like accounting for geography, race, etc?
Hard to say, but their description of methodology indicates that they are trying and taking active steps to achieve that.