topic Control Chart in SAS Procedures

Control Chart

robertrao — Thu, 27 Jun 2013 19:04:55 GMT

Hi,

I have the following table:

I need to make a Control Chart by Unit

with Average days and number of persons

name Unit Days

Kevin Dep1 0.1

Peter Dep2 2.0

Sam Dep3 7.0

Ben Dep1 3.0

Kim Dep3 4.0

bill Dep1 5.0

joe Dep1 3.0

I have used proc schewhart in the past..But i dont really remember how to do it now??

Thanks

Re: Control Chart

ChrisHemedinger — Tue, 02 Jul 2013 17:27:07 GMT

PROC SHEWHART (read about Dr. Shewhart here) offers lots of control chart options.

Here's one example that might not make sense for your data, but it gives you a feel for the syntax/mechanics.

Result:

Program:

data cc;

length name $ 10 unit $ 4 days 8;

infile datalines dsd;

input name unit days;

datalines;

Kevin,Dep1,0.1

Peter,Dep2,2.0

Sam,Dep3,7.0

Ben,Dep1,3.0

Kim,Dep3,4.0

bill,Dep1,5.0

joe,Dep1,3.0

run;

proc sort data=cc; by name unit; run;

ods graphics off;

proc shewhart data = cc

;

xrchart (days) * unit (name) /

;

run;

quit;

Chris

Re: Control Chart

robertrao — Tue, 02 Jul 2013 17:37:42 GMT

Hi Chris,

Thanks a lot for the reply. I also read some literature in the mean while.. I was wondering if I need to set the control limits for my data.

Will SAS set the limits by itself????

Thanks