By deST on Monday, October 21, 2002 - 08:57 am:
Dear Friends;
I am calculating the Confidence Interval for a Trace Analysis:
1- What is the Confidence for Confidence Interval in Trace Analysis? I am trying 95 % of Confidence but this Confidence Interval is not accetable. It not include the 100% point in my Intermediate Precision Study.
2- Can I use Confidence of 90%?
3- Send me references about it.
Tank you,
deST
By Mel on Monday, October 21, 2002 - 12:06 pm:
I use graph pad's Prism software. www.graphpad.com (Their website is awesome for statistical dummies like me)
This is from their contents "There is nothing magical about 95%. You could calculate CI's for any desired degree of confidence. If you want more confidence that an inerval contains the true parameter, then the intervals have to be wider. So 99% CIs are wider than 95% CIs, and 90% CIs are narrower than 95% CIs."
Since you are doing trace analysis, it is not feasible to use a 95% CI. Use what is logical for the analysis that you are performing.
By deST on Monday, October 21, 2002 - 01:27 pm:
Hi Melissa,
Tank for your precious help. But I nedd bibliographic references about it.
Maybe you invite it to me?
By Mel on Monday, October 21, 2002 - 02:16 pm:
At www.graphpad.com they have a lot of statistical information with references.
Melissa