topic Input dataset for proc simnormal in SAS Procedures https://communities.sas.com/t5/SAS-Procedures/Input-dataset-for-proc-simnormal/m-p/15453#M2707 <HTML><HEAD></HEAD><BODY><P>I am simulating multivariate data using proc simnormal.&nbsp; I have known parameters rather than generating them using proc corr, so I am creating a dataset that looks like the one proc corr would have output.&nbsp; Proc simnormal seems to require that this dataset includes means standard deviations correlation coefficents and N.&nbsp; I can't see how this N is being used.&nbsp; It seems that unless N=1 the value N takes doesn't really matter, but if N=1 then the simulated values all take the mean values that are input (which makes some sense).&nbsp; Bas I have no known value for N as an input parameter is my assumption that it has no effect so I can choose any value (except N=1) correct?</P></BODY></HTML> Mon, 27 Feb 2012 17:43:13 GMT flg 2012-02-27T17:43:13Z Input dataset for proc simnormal https://communities.sas.com/t5/SAS-Procedures/Input-dataset-for-proc-simnormal/m-p/15453#M2707 <HTML><HEAD></HEAD><BODY><P>I am simulating multivariate data using proc simnormal.&nbsp; I have known parameters rather than generating them using proc corr, so I am creating a dataset that looks like the one proc corr would have output.&nbsp; Proc simnormal seems to require that this dataset includes means standard deviations correlation coefficents and N.&nbsp; I can't see how this N is being used.&nbsp; It seems that unless N=1 the value N takes doesn't really matter, but if N=1 then the simulated values all take the mean values that are input (which makes some sense).&nbsp; Bas I have no known value for N as an input parameter is my assumption that it has no effect so I can choose any value (except N=1) correct?</P></BODY></HTML> Mon, 27 Feb 2012 17:43:13 GMT https://communities.sas.com/t5/SAS-Procedures/Input-dataset-for-proc-simnormal/m-p/15453#M2707 flg 2012-02-27T17:43:13Z Re: Input dataset for proc simnormal https://communities.sas.com/t5/SAS-Procedures/Input-dataset-for-proc-simnormal/m-p/15454#M2708 <HTML><HEAD></HEAD><BODY><P>I raised this question to SAS and the best way to apprach it appears to be to create a COV dataset rather than a CORR dataset when simulating from known parameters but with no knowledge of the N that they are based on.&nbsp; Using this dataset does not encounter the same problems as the CORR dataset when no N is provided.</P></BODY></HTML> Fri, 31 Aug 2012 06:46:20 GMT https://communities.sas.com/t5/SAS-Procedures/Input-dataset-for-proc-simnormal/m-p/15454#M2708 flg 2012-08-31T06:46:20Z