At 06:28 PM 9/20/01 -0400, Stan Brown wrote:
>None that I know, in a formal sense. If you take 100 random samples
>of size 81, or 100,000 random samples of size 81, your histogram of
>sample means will have the same shape, though the curve will be a
>bit smoother with 100,000 samples.
this is for sure ... here i generated 100 samples of n=25 from nd 50, 10
... and then 100000 samples of same size ... here are the dotplots and desc
stats
Dotplot: 100, 100000
::
.:::: .
. ::::: :. :
..:. :::::: :: : . .
..::::.:::::::::::::.::.. .
-----+---------+---------+---------+---------+---------+-100
Each dot represents up to 496 points
.
.:::::.
::::::::.
.:::::::::::
.:::::::::::::.
.:::::::::::::::::
.::::::::::::::::::::..
... .........:::::::::::::::::::::::::::..........
-----+---------+---------+---------+---------+---------+-100000
42.0 45.5 49.0 52.5 56.0 59.5
MTB > desc c27 c26
Descriptive Statistics: 100, 100000
Variable N Mean Median TrMean StDev SE Mean
100 100 50.224 50.036 50.190 1.941 0.194
100000 100000 50.006 50.017 50.007 2.003 0.006
Variable Minimum Maximum Q1 Q3
100 46.283 55.307 49.042 51.504
100000 40.947 58.238 48.653 51.355
>--
>Stan Brown, Oak Road Systems, Cortland County, New York, USA
> http://oakroadsystems.com
>My reply address is correct as is. The courtesy of providing a correct
>reply address is more important to me than time spent deleting spam.
>
>
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==============================================================
dennis roberts, penn state university
educational psychology, 8148632401
http://roberts.ed.psu.edu/users/droberts/drober~1.htm
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