RSS 2.0 Feed

» Welcome Guest Log In :: Register

Pages: (655) < [1] 2 3 4 5 6 ... >   
  Topic: The Bathroom Wall, A PT tradition< Next Oldest | Next Newest >  

Posts: 1431
Joined: Sep. 2009

(Permalink) Posted: Oct. 21 2012,20:02   

Got a statistics problem for anyone feeling bored:


Suppose each value of M has a standard deviation associated with it. What is the standard deviation of X? Is it a simpler calculation if the standard deviation of each M is the same?

This is from my wife's friend. It's been over 25 years since I've done statistics so I'm rusty and trying to brush up. Any help would be appreciated.

Oh...and the notation is the way it is because I've not figured out how to get series fonts to work.

we IDists rule in design for the flagellum and cilium largely because they do look designed.  Bilbo

The only reason you reject Thor is because, like a cushion, you bear the imprint of the biggest arse that sat on you. Louis

  19632 replies since Jan. 17 2006,08:38 < Next Oldest | Next Newest >  

Pages: (655) < [1] 2 3 4 5 6 ... >   

Track this topic Email this topic Print this topic

[ Read the Board Rules ] | [Useful Links] | [Evolving Designs]