Difference between revisions of "ZMean2Estimate Command"

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<noinclude>{{Manual Page|version=4.2}}</noinclude>  
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{{command|statistics}}
 
{{command|statistics}}
 
;ZMean2Estimate[ <List of Sample Data 1>, <List of Sample Data 2>, <σ1>, <σ2>, <Level> ]
 
;ZMean2Estimate[ <List of Sample Data 1>, <List of Sample Data 2>, <σ1>, <σ2>, <Level> ]

Revision as of 12:26, 9 July 2015



ZMean2Estimate[ <List of Sample Data 1>, <List of Sample Data 2>, <σ1>, <σ2>, <Level> ]
Calculates a Z confidence interval estimate of the difference between two population means using the given sample data sets, population standard deviations and confidence Level.
Results are returned in list form as {lower confidence limit, upper confidence limit}.
Example:
Two sample data list1 = {1, 4, 5, 4, 1, 3, 4, 2}, list2 = {2, 1, 3, 1, 2, 5, 2, 4} are given. The standard deviation of list1 is σ_1 = sqrt(2), the standard deviation of list2 is σ_2 = sqrt(1.75) and the confidence level is 0.75.
ZMean2Estimate[list1, list2, σ_1, σ_2, 0.75] yields list3= {-0.29, 1.29}.


ZMean2Estimate[ <Sample Mean 1>, <σ1>, <Sample Size 1>, <Sample Mean 2 >, <σ2>, <Sample Size 2>, <Level>]
Calculates a Z confidence interval estimate of the difference between two population means using the given sample means, population standard deviations and confidence Level.
Results are returned in list form as {lower confidence limit, upper confidence limit}.
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