https://communities.sas.com/t5/SAS-Programming/How-to-compute-the-robust-measure-of-scale-Qn/m-p/371459#M275853 My dataset has no missing values.<BR />Thanks. Wed, 28 Jun 2017 21:00:28 GMT aminkarimid 2017-06-28T21:00:28Z https://communities.sas.com/t5/SAS-Programming/How-to-compute-the-robust-measure-of-scale-Qn/m-p/371103#M275851 <P>Hello everybody,</P><P>I use the PROC UNIVARIATE&nbsp;statement to find outleirs.</P><P>Here are my codes:</P><PRE><CODE class=" language-sas">proc univariate data=sampledata05 robustscale plot; var price; run;</CODE></PRE><P>There is a warning?</P><PRE><CODE class=" language-sas">WARNING: The number of nonmissing observations for variable Price is too large to compute the robust measure of scale Qn. The statistic Qn is set to missing</CODE></PRE><P>How can I fix that?</P><P>Thanks in advance</P> Wed, 28 Jun 2017 00:50:59 GMT https://communities.sas.com/t5/SAS-Programming/How-to-compute-the-robust-measure-of-scale-Qn/m-p/371103#M275851 aminkarimid 2017-06-28T00:50:59Z https://communities.sas.com/t5/SAS-Programming/How-to-compute-the-robust-measure-of-scale-Qn/m-p/371319#M275852 <P>How many non-missing values do you have for Price? The message says that it can't compute the requested value because you have too many points. If you look into details of Qn there is a factorial component (part of an N choose R ) to the calculation and hence for large N cannot be computed in practical terms.</P> Wed, 28 Jun 2017 14:38:19 GMT https://communities.sas.com/t5/SAS-Programming/How-to-compute-the-robust-measure-of-scale-Qn/m-p/371319#M275852 ballardw 2017-06-28T14:38:19Z https://communities.sas.com/t5/SAS-Programming/How-to-compute-the-robust-measure-of-scale-Qn/m-p/371459#M275853 My dataset has no missing values.<BR />Thanks. Wed, 28 Jun 2017 21:00:28 GMT https://communities.sas.com/t5/SAS-Programming/How-to-compute-the-robust-measure-of-scale-Qn/m-p/371459#M275853 aminkarimid 2017-06-28T21:00:28Z