A 95% confidence interval for a population mean is well known and often
calculated as approximately mean +/- 2*(standard-error-of-the-mean).
My question is, what is the most common and easily understood term for
an interval with end-points mean +/- 2*SD which will contain 95% of the
individual values of a population. The ends of the interval are
estimates of the 2.5 and 97.5 percentiles of the distribution.
Thanks
Tim
--
T R Auton PhD MSc C.Math
Head of Biomedical Statistics
Protherics Molecular Design Ltd
Beechfield House
Lyme Green Business Park
Macclesfield
Cheshire SK11 0JL
UK
email: [log in to unmask]
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