Calculate 2 Standard Deviations

Is it possible to calculate a figure for two standard deviations for a
series of numbers? I have the output for 1 SD, but need 2 SDs.

Michael -

If cell A1 has the standard deviation, e.g., =STDEV(data_range), then in
some other cell enter =2*A1.

- Mike
www.mikemiddleton.com

"Michael" <michael@michaelpace.net> wrote in message
news:1145292443.438889.287640@i40g2000cwc.googlegroups.com...
> Is it possible to calculate a figure for two standard deviations for a
> series of numbers? I have the output for 1 SD, but need 2 SDs.

"Michael" wrote:
> Is it possible to calculate a figure for two standard
> deviations for a series of numbers? I have the
> output for 1 SD, but need 2 SDs.

=2*sd

where "sd" is the std dev constant, STDEV(range),
or reference to a cell containing "sd".

Perhaps what you need is the data value associated
with 2sd. That would be:

=avg + 2*sd
=avg - 2*sd

where "avg" is the average constant, AVERAGE(range),
or reference to a cell that containing "avg".