SAS Studio Testing slope=1

[WilliamBoecklen]

How do I test a null hypothesis of slope=1 in linear regression?

I tried Test x=1;

It did not work.

Thanks.

[ballardw]

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@WilliamBoecklen wrote:

How do I test a null hypothesis of slope=1 in linear regression?

I tried Test x=1;

It did not work.

Thanks.

---

So where is the actual regression you used?

Example data might help.

"It did not work" is awful vague.

Are there errors in the log?: Post the code and log in a code box opened with the {i} to maintain formatting of error messages.

No output? Post any log in a code box.

Unexpected output? Provide input data in the form of data step code pasted into a code box, the actual results and the expected results. Instructions here: https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-dat... will show how to turn an existing SAS data set into data step code that can be pasted into a forum code box using the {i} icon or attached as text to show exactly what you have and that we can test code against.

Perhaps comparing the results of the different output between these two calls to proc reg will help.

Pay particular attention to the last 3 tables generated as they are the results of the TEST= options. Large F values or small p-values (Pr>F) indicate the tested value is likely not the parameter for the variable.

proc reg data=sashelp.class;
   model Weight = Height;
   title 'without  test';
run;quit;title;

proc reg data=sashelp.class;
   model Weight = Height;
   hgt1: test height=1;
   hgt3_5: test height=3.5;
   hgt3_8: test height=3.8;
   title 'with  test';
run;quit;title;

[WilliamBoecklen]

Hi,

Here is the code:

ods noproctitle;
ods graphics / imagemap=on;

proc reg data=WORK.PROJECT2 alpha=0.05 plots(only)=(diagnostics residuals 
		fitplot observedbypredicted);
	model Professor=Student /;
	test Student=1;
	run;
quit;

The line, "test student=1" does not change the output from that generated without that statement.