Hi,
Hi sorry about the post with no link. Not sure what happened. Some
explanation on when this can be useful.
http://www.itl.nist.gov/div898/handbook/eda/section3/bihistog.htm
rajesh
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Nick Cox
Sent: 27 August 2008 11:14
To: [email protected]
Subject: RE: st: RE: bihistogram
Conventionally population pyramids are side-by-side, bihistograms
(whether named as such or not) top-and-bottom, but it's the same basic
idea.
The popularity and familiarity of population pyramids sometimes obscure
one simple question: how effective are they? In most cases the numbers
of males and females are within a few percent of each other, and so what
you see is an approximate pair of mirror images. Showing the sex ratio
directly as a function of age would seem to be better at showing more
subtle details, e.g. any cross-over point when sex ratio was 1.
Nick
[email protected]
Sergiy Radyakin
What is the difference between bihistogram and a population pyramid?
Is it another way of drawing (horizontal vs vertical)? Or is it just
another term?
If so, this might be helpful:
http://www.ats.ucla.edu/stat/Stata/library/GraphExamples/code/twobar4.ht
m
and this too:
net search pyramid
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