topic Re: High R Square with non-significant in SAS Programming

High R Square with non-significant

samer_badri75 — Tue, 29 Jan 2019 18:57:23 GMT

options pageno=1 linesize=80;
goptions reset=all;
title "Multiple regression for shelf_life";
data  shelf_life;
input  Temp   RH    Days;
	datalines;

10	94	65
10	93	51
10	94	70
9	93	78


	;
	run;
* Print data set;
proc print data= shelf_life;
run;
* Plot y vs. x variables;
proc gplot data=shelf_life;
	plot Days*(Temp   RH  );
	symbol1 i=rl v=star c=black;
	run;
* Multiple regression analysis;
ods html;
ods graphics on;
proc reg data=shelf_life;
	* Specify regression model and request residual-residual plots;
	model Days = Temp RH  / clb stb partial tol selaction=RSquare;
	run;
	Plot r.*pred. r.*nqq.;
run;
quit;
proc reg data=shelf_life;
	* Specify regression model and request residual-residual plots;
	model Days = Temp / clb stb partial tol selaction=RSquare;
	run;
ods graphics off;
ods html close;
quit;

Greeting All

I used multiple regression and I got high R Square with non-significant. How I can write the equation

The code was attached under the name Shelf-life1.

Best Regards

Samir

Re: High R Square with non-significant

Reeza — Tue, 29 Jan 2019 20:28:04 GMT

Attachments aren't supported at this time, you can paste your code into the editor box directly or embed pictures using photos. Do not attach your code as a picture though.

You can write the equation from the parameter estimates table. You can also use a SCORE statement or PROC SCORE or PROC PLM to score new data with a developed model.

@samer_badri75 wrote:

options pageno=1 linesize=80;
goptions reset=all;
title "Multiple regression for shelf_life";
data  shelf_life;
input  Temp   RH    Days;
	datalines;

10	94	65
10	93	51
10	94	70
9	93	78


	;
	run;
* Print data set;
proc print data= shelf_life;
run;
* Plot y vs. x variables;
proc gplot data=shelf_life;
	plot Days*(Temp   RH  );
	symbol1 i=rl v=star c=black;
	run;
* Multiple regression analysis;
ods html;
ods graphics on;
proc reg data=shelf_life;
	* Specify regression model and request residual-residual plots;
	model Days = Temp RH  / clb stb partial tol selaction=RSquare;
	run;
	Plot r.*pred. r.*nqq.;
run;
quit;
proc reg data=shelf_life;
	* Specify regression model and request residual-residual plots;
	model Days = Temp / clb stb partial tol selaction=RSquare;
	run;
ods graphics off;
ods html close;
quit;

Greeting All

I used multiple regression and I got high R Square with non-significant. How I can write the equation

The code was attached under the name Shelf-life1.

Best Regards

Samir

Re: High R Square with non-significant

samer_badri75 — Tue, 29 Jan 2019 18:58:31 GMT

Hi Sir

Many thanks for your quick response. I add the code.

Thanks

Re: High R Square with non-significant

Reeza — Tue, 29 Jan 2019 20:29:30 GMT

I would suggest you don't refer to people as 'Sir' unless you know their gender.

Your code has warnings, you should fix those - check your log.

Your formula is:

Y = 222 - 16 * temp

@samer_badri75 wrote:

Hi Sir

Many thanks for your quick response. I add the code.

Thanks

Re: High R Square with non-significant

samer_badri75 — Tue, 29 Jan 2019 20:39:36 GMT

Sorry for that

Thanks for your help