Preferred Label : confidence limits (about the mean);
IUPAC definition : Symmetric confidence limits ( C) about the estimated mean, which cover the population
mean with probability 1- α. The quantity C is calculated by the formula: \[C \frac{t_{{p},v
{S}}}{\sqrt{n}}\] Here t p , v, is the critical value from the t- (or Student) distribution
function corresponding to the confidence level 1- α and degrees of freedom v. The
symbol p represents the percentile (or percentage point) of the t-distribution. For
1-sided intervals, p 1- α; for 2-sided intervals, p 1- α 2. In each case, the
confidence level is 1- α. The confidence interval is given as x _ C.;
Scope note : if the population standard deviation s is known, confidence limits about a single
result may be calculated with the formula:c tp,sthe coefficient t p,, is the limiting
value of the t-distribution function for v at confidence level 1a. this is identical
to zp, the pth percentage point of the standard normal variate.;
Origin ID : C01247;
UMLS CUI : C0237530;
Currated CISMeF NLP mapping
- See also
- Semantic type(s)
- UMLS correspondences (same concept)
Symmetric confidence limits ( C) about the estimated mean, which cover the population
mean with probability 1- α. The quantity C is calculated by the formula: \[C \frac{t_{{p},v
{S}}}{\sqrt{n}}\] Here t p , v, is the critical value from the t- (or Student) distribution
function corresponding to the confidence level 1- α and degrees of freedom v. The
symbol p represents the percentile (or percentage point) of the t-distribution. For
1-sided intervals, p 1- α; for 2-sided intervals, p 1- α 2. In each case, the
confidence level is 1- α. The confidence interval is given as x _ C.
