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tInterval
Catalog >
Computes a t confidence interval. A
summary of results is stored in the
stat.results variable. (See page 145.)
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 196.
Output variable Description
stat.CLower, stat.CUpper Confidence interval for an unknown population mean
stat.v Sample mean of the data sequence from the normal random distribution
stat.ME Marginof 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 145.)
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 196.
Output variable Description
stat.CLower,
stat.CUpper
Confidence interval containing confidence levelprobability of distribution
stat.v1-v2 Sample means of the data sequences from the normal random
distribution
Alphabetical Listing 155
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