Your name does not show up in my mailer or the Statalist archives. You
might want to adjust your mailer settings.
Type
. whelp spearman
in your Stata to see what the correct syntax is. My manual for
-spearman- for Stata 8 has got buried somewhere, but I think you are
using a later syntax which doesn't apply.
Perhaps you are reading the syntax off the StataCorp website.
The easiest way I know to get a table for -spearman- is just to
rank-transform all the variables and then apply -correlate-.
sysuse auto, clear
foreach v of var price-gear {
egen rank_`v' = rank(`v')
}
corr rank*
You can square Spearman rank correlation coefficients if you so wish,
but I don't think it serves much useful purpose. The interpretation is
presumably that (e.g.) a Spearman rank correlation of 0.8 means that 64%
of the variance in the rank of one variable is explained by the rank of
the other.
Nick
[email protected]
I have a problem with spearman, perhaps because I use stata8:
I used spearman A B, stats (rho obs p) to display the correlation
coefficient, number of observations, and significance level. But stata
always says: options not allowed, r(101). What is wrong? Alternatively,
it would help me to get a hint how to create tables for spearman (like
outreg for regressions).
In addition, I got a rank correlation coefficient of 0.6 between
variable "A" and variable "B". Now I would like to say: A has a
correlation with B of 0.65, suggesting that A explains ?% of the
variation in B. Does anyone know which command to use?
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