Application Guide

188 Alphabetical Listing
tInterval
Catalog >
tInterval v, sx, n[, CLevel]
(Summary stats input)
Computes a t confidence interval. A
summary of results is stored in the
stat.results variable. (See page 177.)
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 236.
Output variable Description
stat.CLower, stat.CUpper Confidence interval for an unknownpopulation mean
stat.v Sample meanof the data sequence from the normal random distribution
stat.ME Margin of error
stat.df Degrees of freedom
stat.σx
Sample standard deviation
stat.n Length of the data sequence with sample mean
tInterval_2Samp
Catalog >
tInterval_2Samp List1,List2[,Freq1[,Freq2
[,CLevel[,Pooled]]]]
(Data list input)
tInterval_2Samp v1,sx1,n1,v2,sx2,n2
[,CLevel[,Pooled]]
(Summary stats input)
Computes a two-sample t confidence
interval. A summary of results is stored in
the stat.results variable. (See page 177.)
Pooled=1 pools variances; Pooled=0 does
not pool variances.
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 236.