- concerning the 'typo' -
On 16 Jun 2003 05:51:41 +0100, helen-louise <[EMAIL PROTECTED]>
wrote:
[ snip ]
> > > e) Take the square root, divide by N
Don > >
> > Are you sure about this? I would have thought you'd divide by N (or
> > possibly by N-1), then take the square root; and as you conjectured
> > later (below), that would indeed be a standard deviation rather than
> > a variance.
>
> Oh dear. I just double-checked the paper I got the method from, and
> they have definitely included the /N in the square root. It is
> possible that this is a typo, but it's a depressingly major mistake if
> it is.
Typo? But "included the /N in the square root" is exactly what
Don expects. What you say is written, and what Don says, is
SD= sqrt(SS/N)
not,
SD= sqrt(SS)/N
which would produce the statement in (e).
The paper had no apparent typo. Am I missing something?
--
Rich Ulrich, [EMAIL PROTECTED]
http://www.pitt.edu/~wpilib/index.html
"Taxes are the price we pay for civilization." Justice Holmes.
.
.
=================================================================
Instructions for joining and leaving this list, remarks about the
problem of INAPPROPRIATE MESSAGES, and archives are available at:
. http://jse.stat.ncsu.edu/ .
=================================================================
