Posted by
Marta García-Granero on
Aug 15, 2006; 5:22pm
URL: http://spssx-discussion.165.s1.nabble.com/Dispersion-tp1070259p1070261.html
Hi
SUr> I got this data from a student and he is asking about the three values
SUr> of Dispersion (73%, 99 and 205). I don't have any other info and can't
SUr> describe the three values of dispersion so please anyone know about then
SUr> let me know.
SUr> Avq. Min Max Dispersion
SUr> Cost per day ($) 107 46 898 73%, 99 and 205
In my opinion, 73% could be the coefficient of variation
(100*SD/mean), and, perhaps, given that the data look quite skewed to
the right, "99 and 205" could be the interquartilic range (IQR), that
is: the interval formed by Q1 and Q3 (or P25 and P75, as you wish to
call them).
Just guessing...
--
Regards,
Dr. Marta García-Granero,PhD mailto:
[hidden email]
Statistician
---
"It is unwise to use a statistical procedure whose use one does
not understand. SPSS syntax guide cannot supply this knowledge, and it
is certainly no substitute for the basic understanding of statistics
and statistical thinking that is essential for the wise choice of
methods and the correct interpretation of their results".
(Adapted from WinPepi manual - I'm sure Joe Abrahmson will not mind)