2.5 StdDevs
I have a column of numbers. I want to eliminate all data in the
column that is greater than 2.5 standard deviations from the mean,
leaving only the data that is within 2.5 StdDevs. I have a lot of
data, so I need to do this as quickly as possible so I can then get
statistical quartiles for the data. Any help on one or both issues
greatly appreciated! James
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