User Manual

168 Alphabetical Listing
zInterval
Catalog >
Computes a z 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.x Sample mean of the data sequence from the normal random distribution
stat.ME Marginof error
stat.sx Sample standard deviation
stat.n Length of the data sequence with sample mean
stat.σ Knownpopulation standard deviation for data sequence List
zInterval_1Prop
Catalog >
zInterval_1Prop x,n [,CLevel]
Computes a one-proportion z confidence
interval. A summary of results is stored in
the stat.results variable. (See page 145.)
x is a non-negative integer.
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.Ç The calculated proportion of successes
stat.ME Margin of error
stat.n Number of samples in data sequence
zInterval_2Prop
Catalog >
zInterval_2Prop x1,n1,x2,n2[,CLevel]