topic Help with prediction and confidence limits please :( in SAS Procedures https://communities.sas.com/t5/SAS-Procedures/Help-with-prediction-and-confidence-limits-please/m-p/105553#M29437 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>I have performed SLR using "proc reg" on some data, and output the 95% confidence and prediction intervals.</P><P>There isn't much data and I'm looking at it for someone else who doesn't use SAS.</P><P>Using Excel, I need to replicate the plot of the data with a regression line and the limits.</P><P>How do I calculate these limits?</P><P>I don't understand how SAS calculates "STd Error Mean Predict" values. Does anyone know the formula? I could just paste the values in but that's wrong! </P><P>Thanks,</P><P>Katie xx</P></BODY></HTML> Thu, 13 Jun 2013 14:58:44 GMT katiexyz 2013-06-13T14:58:44Z Help with prediction and confidence limits please :( https://communities.sas.com/t5/SAS-Procedures/Help-with-prediction-and-confidence-limits-please/m-p/105553#M29437 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>I have performed SLR using "proc reg" on some data, and output the 95% confidence and prediction intervals.</P><P>There isn't much data and I'm looking at it for someone else who doesn't use SAS.</P><P>Using Excel, I need to replicate the plot of the data with a regression line and the limits.</P><P>How do I calculate these limits?</P><P>I don't understand how SAS calculates "STd Error Mean Predict" values. Does anyone know the formula? I could just paste the values in but that's wrong! </P><P>Thanks,</P><P>Katie xx</P></BODY></HTML> Thu, 13 Jun 2013 14:58:44 GMT https://communities.sas.com/t5/SAS-Procedures/Help-with-prediction-and-confidence-limits-please/m-p/105553#M29437 katiexyz 2013-06-13T14:58:44Z Re: Help with prediction and confidence limits please :( https://communities.sas.com/t5/SAS-Procedures/Help-with-prediction-and-confidence-limits-please/m-p/105554#M29438 <HTML><HEAD></HEAD><BODY><P>Why would it be wrong to use the calculated values?&nbsp; One of the great advantages of a package like SAS is that you don't have to load into a second package and do a lot of calculations.&nbsp; In particular, look at the PLOTS option in PROC REG.&nbsp; You should be able to get all of this from those plots (especially with PLOTS=FIT).</P><P></P><P>Steve Denham</P></BODY></HTML> Thu, 13 Jun 2013 17:03:33 GMT https://communities.sas.com/t5/SAS-Procedures/Help-with-prediction-and-confidence-limits-please/m-p/105554#M29438 SteveDenham 2013-06-13T17:03:33Z