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2012 Feb 05
1
How to Calculate Percentage of Data within certain SD of Mean
How do you calculate the percentage of data within 2SD, 3SD, 4SD, 5SD, and
6SD of the mean?  I used the following link as the data I'm working with: 
nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10") if
this helps answer my question.  Can you please explain how to calculate the
SD's?  Please be specific in which part of the...