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170 Alphabetical Listing
Output variable Description
stat.x1-x2 Sample means of the data sequences from the normal random
distribution
stat.ME Margin of error
stat.x1, stat.x2 Sample means of the data sequences from the normal random
distribution
stat.σx1, stat.σx2 Sample standard deviations for List 1 and List 2
stat.n1, stat.n2 Number of samples indata sequences
stat.r1, stat.r2
Knownpopulation standard deviations for data sequence List 1 andList
2
zTest
Catalog >
zTest μ0,σ,List,[Freq[,Hypoth]]
(Data list input)
zTest μ0,σ,v,n[,Hypoth]
(Summary stats input)
Performs a z test with frequency freqlist. A
summary of results is stored in the
stat.results variable. (See page 145.)
Test H
0
: μ = μ0, against one of the
following:
For H
a
: μ < μ0, set Hypoth<0
For H
a
: μ ≠ μ0 (default), set Hypoth=0
For H
a
: μ > μ0, set Hypoth>0
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 196.
Output variable Description
stat.z
(x − μ0) / (σ / sqrt(n))
stat.P Value Least probability at which the null hypothesis can be rejected
stat.x
Sample mean of the data sequence inList
stat.sx
Sample standard deviation of the data sequence. Only returned for Data input.
stat.n Size of the sample
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