May I ask you if my interpretation of SAS results are correct. thanks !!!
my data has a class variable u_rank, it takes on two values 1, and 4,
my test variable is disclose (a continuous variable).
I use proc npar1way to test difference in median of disclose between u_rank=1 and u_rank=4.
see below for code (attached)
my interpretation is :
median is zero for both u_rank=1 or 4
I am not certain:
The NPAR1WAY shows z value to be significant.
could I conclude : even though median value of disclose is 0 for both u_rank=1 and u_rank=4 , but median test still shows significant difference between the class variable u_rank?
thanks !!!
Lan
Yes you could. Your data likely has a fair proportion of disclose=0 observations in both u_rank groups. Run the following simulation:
data test;
call streaminit(987676);
do u_rank = 1, 4;
do i = 1 to 2520;
if mod(i, 2) then disclose = 0;
else disclose = rand("NORMAL", u_rank*0.05);
output;
end;
end;
drop i;
run;
proc univariate data=test;
class u_rank;
var disclose;
histogram;
run;
proc npar1way data=test median wilcoxon;
class u_rank;
var disclose;
run;
PG
Yes you could. Your data likely has a fair proportion of disclose=0 observations in both u_rank groups. Run the following simulation:
data test;
call streaminit(987676);
do u_rank = 1, 4;
do i = 1 to 2520;
if mod(i, 2) then disclose = 0;
else disclose = rand("NORMAL", u_rank*0.05);
output;
end;
end;
drop i;
run;
proc univariate data=test;
class u_rank;
var disclose;
histogram;
run;
proc npar1way data=test median wilcoxon;
class u_rank;
var disclose;
run;
PG
Thanks so much, PG .
Don't miss out on SAS Innovate - Register now for the FREE Livestream!
Can't make it to Vegas? No problem! Watch our general sessions LIVE or on-demand starting April 17th. Hear from SAS execs, best-selling author Adam Grant, Hot Ones host Sean Evans, top tech journalist Kara Swisher, AI expert Cassie Kozyrkov, and the mind-blowing dance crew iLuminate! Plus, get access to over 20 breakout sessions.
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.