topic Re: TEST OF STATISTICAL SIGNIFICANCE in SAS Studio

TEST OF STATISTICAL SIGNIFICANCE

lizzy100 — Sat, 15 Feb 2020 16:04:19 GMT

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

Re: TEST OF STATISTICAL SIGNIFICANCE

PGStats — Sat, 15 Feb 2020 19:24:57 GMT

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.

Re: TEST OF STATISTICAL SIGNIFICANCE

PaigeMiller — Sun, 16 Feb 2020 02:42:47 GMT

@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.