Jump to content

  • Log in with Facebook Log in with Twitter Log in with Windows Live Log In with Google      Sign In   
  • Create Account

Submit your paper to J Biol Methods today!
- - - - -

Averaging two uncertain values

  • Please log in to reply
No replies to this topic

#1 Baars01



  • Active Members
  • PipPipPipPipPip
  • 45 posts

Posted 04 May 2011 - 06:57 AM

I have googled this extensively to little avail.

I have two biological sample sets consisiting of technical reps which I each average yielding an uncertain mean with standard deviation (remember, this value is biological, not technical). These sample sets signficantly differ (t-test). I can take the mean of these by averaging the two means, but how do I get the standard deviation of this mean.
I do this for a number of sample set "pairs" and the variance is mostly similar (they pass Levene's test). I normally would use the square root (i.e. zD = sqr(zX^2 + zY^2)) but I'm worried about applying this to sample set pairs which differ significantly and to those that have unequal variance.

What would be the best solution for this?


Home - About - Terms of Service - Privacy - Contact Us

©1999-2013 Protocol Online, All rights reserved.