Re: Comparison of percentiles in SPSS
Posted by
Rich Ulrich on
Feb 02, 2013; 10:06pm
URL: http://spssx-discussion.165.s1.nabble.com/Comparison-of-percentiles-in-SPSS-tp5717882p5717892.html
There was a thread discussing CIs, etc., for quantiles, in the
sci.stat.math Usenet group, from just this week. See
https://groups.google.com/forum/?fromgroups=#!topic/sci.stat.math/QhE3qxl8E6Y
For the simple test, you simply look at the 2x2 contingency
table that is created by dichotomizing each group at their joint
99th percentile (which you might put in a variable by using options
in RANK).
By the way ... this did not get asked in that sci.stat.math dialog ...
WHY do you want to compare an extreme quantile?
--
Rich Ulrich
> Date: Sat, 2 Feb 2013 09:09:41 -0800
> From:
[hidden email]> Subject: Re: Comparison of percentiles in SPSS
> To:
[hidden email]>
> Thanks Jon, for quick reply.
>
> In fact, I had calculated the percentiles using the Analyze > Descriptives >
> Explore procedure. However, I realize that I should have been more specific
> in the description of my problem: what I need to do is to estimate at which
> levels of significance the 99th percentiles in specified subgroups (e.g. men
> and women) differ to each other.
>
> Is this feasible in SPSS and how ?
>
...