CI for median

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CI for median

drfg2008
SPSS 17 / Vista

is there a possibility to compute Confidence intervals of the median with SPSS?

Thank you
Dr. Frank Gaeth

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Re: CI for median

Ryan
I have never had the need to construct confidence limits for a median
in SPSS. Having said that, I think the approach BELOW should work.
Perhaps someone who's given this more thought can either confirm that
this approach is valid or offer up another approach.

HTH.

Ryan
--

data list list / x group.
begin data
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
end data.

RATIO STATISTICS x WITH group
  /PRINT=CIN(95) MEDIAN.

On Sun, Feb 20, 2011 at 7:53 AM, drfg2008 <[hidden email]> wrote:

> SPSS 17 / Vista
>
> is there a possibility to compute Confidence intervals of the median with
> SPSS?
>
> Thank you
>
> -----
> FUB
>
> --
> View this message in context: http://spssx-discussion.1045642.n5.nabble.com/CI-for-median-tp3393081p3393081.html
> Sent from the SPSSX Discussion mailing list archive at Nabble.com.
>
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=====================
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Re: CI for median

Jon K Peck
In addition, with newer versions of Statistics you can request bootstrap confidence intervals for the median in various procedures including Frequencies.

Jon Peck
Senior Software Engineer, IBM
[hidden email]
312-651-3435




From:        R B <[hidden email]>
To:        [hidden email]
Date:        02/20/2011 08:27 AM
Subject:        Re: [SPSSX-L] CI for median
Sent by:        "SPSSX(r) Discussion" <[hidden email]>




I have never had the need to construct confidence limits for a median
in SPSS. Having said that, I think the approach BELOW should work.
Perhaps someone who's given this more thought can either confirm that
this approach is valid or offer up another approach.

HTH.

Ryan
--

data list list / x group.
begin data
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
end data.

RATIO STATISTICS x WITH group
 /PRINT=CIN(95) MEDIAN.

On Sun, Feb 20, 2011 at 7:53 AM, drfg2008 <[hidden email]> wrote:
> SPSS 17 / Vista
>
> is there a possibility to compute Confidence intervals of the median with
> SPSS?
>
> Thank you
>
> -----
> FUB
>
> --
> View this message in context:
http://spssx-discussion.1045642.n5.nabble.com/CI-for-median-tp3393081p3393081.html
> Sent from the SPSSX Discussion mailing list archive at Nabble.com.
>
> =====================
> To manage your subscription to SPSSX-L, send a message to
> [hidden email] (not to SPSSX-L), with no body text except the
> command. To leave the list, send the command
> SIGNOFF SPSSX-L
> For a list of commands to manage subscriptions, send the command
> INFO REFCARD
>

=====================
To manage your subscription to SPSSX-L, send a message to
[hidden email] (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD

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Re: CI for median

drfg2008
In reply to this post by Ryan
thank you! didn't know that command


thank you also for bootstrap! (My version: v17)  

I suppose the bootstrapped CI is not necessarily equal on each side if data distribution is not symmetric
Dr. Frank Gaeth