topic Re: Scatter plot showing correlation with best fit line in Statistical Procedures

Scatter plot showing correlation with best fit line

Manije72 — Mon, 13 Feb 2023 13:08:36 GMT

I want to create a scatter plot showing correlation with a best fit line. When I use ellipse=0.2 0.3 in PROC CORR I find a scatter plot with circle best line. I want a straight best line like the picture I attached.

I want to create a scatter plot which shows r and P-value for correlation with a best fit line. Can you help me?

Re: Scatter plot showing correlation with best fit line

PaigeMiller — Mon, 13 Feb 2023 13:57:03 GMT

Some of us (like me) never download attachments. Please show us the plot of interest by clicking on the "Insert Photos" icon and not via attaching a file.

Also, take a look at the ELLIPSE statement and the example here, if this is what you want, except no line, we can do this and add the line.

Re: Scatter plot showing correlation with best fit line

ballardw — Mon, 13 Feb 2023 16:01:30 GMT

Create output data from Proc Corr.

Use a data step to use that information to create a series of points for the line

Combine that data with the raw data

Use SGPLOT and overlay a Scatter plot of the raw data with a Series plot of the line points created.

Re: Scatter plot showing correlation with best fit line

Reeza — Mon, 13 Feb 2023 17:01:09 GMT

Plot:

proc sgplot data=sashelp.class;
reg x=height y=weight ;
run;

Values - need to get from PROC CORR and add in using INSET

Re: Scatter plot showing correlation with best fit line

Reeza — Mon, 13 Feb 2023 17:28:53 GMT


ods select none;
ods output parameterEstimates=pEst fitStatistics=fStats;
proc reg data=sashelp.class;
  model weight = height;
  output out=graphingData p=predicted;
run;

data _null_;
set fStats (obs=1);
call symputx('corr', put(sqrt(nValue2), 12.4));
run;

data _null_;
set pEst(obs=2);
call symputx('pvalue', put(probT, pvalue.));
run;
ods select all;
	
proc sgplot data=sashelp.class;
  reg x=height y=weight ;
  inset ("Correlation = " = "&corr."
          "P-Value =" = "&pvalue.");
run;