Hand Tools Archive
Subject:
Re: One thing to remember...Response To:
One thing to remember... () Joe Shelton
Empirically, 99.7% will be within 3 SD of the mean.
I think your guess about 1 RC is safe.
Finally, I've never seen any instance, prior to this tabular extract, of a report showing a mean value of std dev, and I think it is not a meaningful statistic.