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beoShaffer comments on "Ask for help on your project" open thread - Less Wrong
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For the last 30+ days, I've been randomly taking vitamin D before bed and recording sleep data with Zeo as well as my best guess whether it was D or placebo: http://www.gwern.net/Zeo#vitamin-d
But I'm going to finish within the next <10 days, and then it's time for analysis. I would like to do a real statistical analysis, like a 'one-tailed T test', on the ZQ and components like length of REM sleep, but I don't actually know how - I've never used the standard statistical programs or packages like R. (Yes, yes, I know, I should learn real statistics. I haven't yet, though.)
My needs aren't too complex, I'm just asking whether the vitamin D did anything (bad), so maybe there is an easy to use online tool or something which would handle it?
If you have a Graphing calculator it can probably do it for you. If you have a TI-84 its Stats->tests I think you'd want "2-SampTTest" but its been a while since I've used that function. Their website gives more info. -edit to add detail/clarification
I don't, no.