BookmarkSubscribeRSS Feed
lizzy100
Calcite | Level 5

Hello,

 

Please, when doing a test of statistical significance judging based on the p-value and intervals, is it possible to get difference results. For example, is it possible that judging from the p-values, the independent variables are not statistically significant but judging from the intervals they are statistically significant?

 

Thanks a lot.

 

Regards,

 

lizzy100

2 REPLIES 2
PGStats
Opal | Level 21

Yes it is possible that p-values and confidence intervals sit on opposite sides of a of a given significance threshold (such as 0.05). But it is quite rare. In any case, there isn't that much qualitative difference between p=0.049 and p=0.051.  P-values are random quantities, after all.

PG
PaigeMiller
Diamond | Level 26

@lizzy100 wrote:

Hello,

 

Please, when doing a test of statistical significance judging based on the p-value and intervals, is it possible to get difference results. For example, is it possible that judging from the p-values, the independent variables are not statistically significant but judging from the intervals they are statistically significant?

 


I'd prefer not to make any meaningful comment on your results without seeing the results. Please show us the actual SAS output so we can see what you are seeing. I don't even understand the answer from @PGStats without seeing an example.

 

It is my understanding that (except for round-off error), the confidence interval and the statistical test ought to produce equivalent answers.

 
 
 
--
Paige Miller

Ready to join fellow brilliant minds for the SAS Hackathon?

Build your skills. Make connections. Enjoy creative freedom. Maybe change the world. Registration is now open through August 30th. Visit the SAS Hackathon homepage.

Register today!
SAS Enterprise Guide vs. SAS Studio

What’s the difference between SAS Enterprise Guide and SAS Studio? How are they similar? Just ask SAS’ Danny Modlin.

Find more tutorials on the SAS Users YouTube channel.

Click image to register for webinarClick image to register for webinar

Classroom Training Available!

Select SAS Training centers are offering in-person courses. View upcoming courses for:

View all other training opportunities.

Discussion stats
  • 2 replies
  • 428 views
  • 0 likes
  • 3 in conversation