Yay, Allyson!!
'Not Fade Away'
Natter 39 and Holding
Off-topic discussion. Wanna talk about corsets, duct tape, or physics? This is the place. Detailed discussion of any current-season TV must be whitefonted.
Woohoo, Allyson!
Fingers crossed for you.
The mango news makes me feel a bit better.
Hey, is there anyone around who knows statistics? I've got a yes/no survey here with a response rate of about 56%, and I want to know if there's any way to get from that to a margin of error on the percentage of yeses. It seems like there must be, but frankly it's been six years since I had stats and most of it is apparently gone from my brain.
You need the total sample size, Katie, I'm pretty sure. Like here: [link]
In other news, I am now convinced that the Vitamin Water is magic, as I seem to be pretty much all better today. So that's something.
I've never thought of it as magic, but I have thought of it as crack.
As Jesse says, just by knowing the sample size you can get what pollsters call margin of error, which is a broad concept that applies to all of the numbers in their poll. It's fairly useless from a statistical standpoint, but good enough to tell whether you should take the numbers seriously at all.
If you want a specific confidence interval for your .56 you compute the standard error. You take the square root of:
(.56*(1-.56)/N where N is the sample size.
Then once you have the standard error you multiply it by the factor that will give you a given confidence interval. For instance, + or - 1.96 times the error gives you a 95% confidence interval for the percentage.
I've never thought of it as magic, but I have thought of it as crack.
Possibly that too, and I'll only feel good as long as I keep drinking it.
It is truly pathetic how fast I forgot everything I "learned" in stats class last year.
Whenever I see vitamin water or smart water or any of the other kinds of minorly doctored waters, I think of miracle-gro. I can't help it. Maybe it was one too many years of grade school "which is the best fertilizer" experiments.