Basic Stat Question
- To: mathgroup at smc.vnet.net
- Subject: [mg42591] Basic Stat Question
- From: Moranresearch at aol.com
- Date: Thu, 17 Jul 2003 03:45:10 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
I have a list l1= {{xi,yi}}
I want to find the Mean xi where s <y < t
for a series of s and t.
So say I have the height of a million children and I want to know the average
height at age 1, 2, 3...18. How do I do this?
Also the data a field "Gender" how do I select the subset "Girls" or "Boys"
to analyze.
Thank you.
John
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