In article <94pmgo$rn7$[EMAIL PROTECTED]>,
<[EMAIL PROTECTED]> wrote:
>Avid regression-to-the-mean watchers may be interested to know that,
>according to yesterday's summary of the growing rich-poor divide
>(on teletext news), the current top 10% of earners have had
>a higher percentage increase in income over the past x years
>(for some x that I've forgotten) than have the lowest 10% of earners.
This has nothing to do with regression to the mean.
The people in the top 10% and the bottom 10% have changed.
In Galton's data, the top 10% of the sons were just about
as far from the mean as the top 10% of the fathers.
--
This address is for information only. I do not claim that these views
are those of the Statistics Department or of Purdue University.
Herman Rubin, Dept. of Statistics, Purdue Univ., West Lafayette IN47907-1399
[EMAIL PROTECTED] Phone: (765)494-6054 FAX: (765)494-0558
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