Originally Posted by mickeycrimm View Post
Originally Posted by Half Smoke View Post
Originally Posted by mickeycrimm View Post
6600 tested out of 909,000. That's about 3 quarters of 1 percent

what is the margin of error on this sample size?
can somebody show me how to do the math?

thanks
I googled "population of montana" to get that number. I got the number tested off of "worldometers.info/coronavirus/" From the home page you click on USA then click on whichever state you want, then click on the [1] on the far right. It will show you how many have been tested. The numbers are continually going up so I think they are updating quickly. Yesterday the number tested in Montana was about 5500.


thanks, but I meant this:


if 6600 were tested out of 909,000 and it showed for example that 1% had it

how close to being accurate would that be for the entire population?

the margin of error - it could really be for example from .7% to 1.3%

I was curious about how the math is done to figure that out - and what the margin of error in this case would actually be

I think when they do it for election polls they go to 2 standard deviations out - of course, it's not 100% accurate - it could be 3 or 4 standard deviations away, but very unlikely