Hi everybody,
I'im doing a simple proc lifetest with a productLimit estimates. Everything is going well, but seeaing the results :
Quartile Estimates
Point 95% Confidence Interval
Percent Estimate Transform [Lower Upper)
75 . LOGLOG 68.0984 .
50 36.5246 LOGLOG 34.7213 38.9508
25 15.8689 LOGLOG 14.3934 17.5738
You see that for the 75% percentile, SAS don't do an estimation (ok no problem) but why do it estimate the lower confidence interval ????
Thank you for helping me