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infotechmar
‎01-06-2022
  • 4 Posts
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Re: How to compute a combined standard deviation?

by Calcite | Level 5 in Statistical Procedures
‎04-04-2013 01:33 PM
‎04-04-2013 01:33 PM
Yes, I'm trying to get it for the total group.  We can assume the sub-groups are independent. ... View more

Re: How to compute a combined standard deviation?

by Calcite | Level 5 in Statistical Procedures
‎04-04-2013 12:15 PM
‎04-04-2013 12:15 PM
Yes, I would know the number of observations in each group. ... View more

How to compute a combined standard deviation?

by Calcite | Level 5 in Statistical Procedures
‎04-04-2013 11:21 AM
‎04-04-2013 11:21 AM
I'm combining a number of individual observations where I have the mean and standard deviation of each.  They are sub-groups of what I'm combining them to.  How do I compute the overall standard deviation?  I know it's not as simple as averaging the standard deviations.  Also, I'd like them weighted based on the size of the mean of each observation.  An example of two observations is below, but in many cases I'll have more than two observations to be combined.  I have base SAS and SAS Stat available. Mean       Standard deviation 11865     3187 1010       658 ... View more

Re: New hotfix (A53005) for SAS Enterprise Guide 4.22

by Calcite | Level 5 in SAS Enterprise Guide
‎04-15-2011 11:24 AM
‎04-15-2011 11:24 AM
What are the issues with Windows XP? I've tried lots of different ways to get EG to work efficiently but still have problems. ... View more
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