Difference between revisions of "TTest2 Command"

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<noinclude>{{Manual Page|version=4.0}}</noinclude>
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<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|statistics}}
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;TTest2( &lt;List of Sample Data 1>, &lt;List of Sample Data 2>, <Tail>, <Boolean Pooled> ):
;TTest2[<List of Sample Data 1>,<List of Sample Data 2>,<Tail>,<Boolean Pooled>]:
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:Performs a t-test of the difference between two population means using the given lists of sample data.  Tail has possible values "<", ">" , "≠" that determine the following alternative hypotheses:
:Performs a T test of the difference between two population means using the given lists of sample data.  Tail has possible values "<", ">" , "≠" that determine the following alternative hypotheses:
 
 
:: "<" = difference in population means < 0
 
:: "<" = difference in population means < 0
 
:: ">" = difference in population means > 0
 
:: ">" = difference in population means > 0
 
:: "≠" = difference in population means ≠ 0
 
:: "≠" = difference in population means ≠ 0
  
:If ''Pooled'' = true, then population variances are assumed equal and sample standard deviations are combined in calculation.
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::If ''Pooled'' = true, then population variances are assumed equal and sample standard deviations are combined in calculation.
:If ''Pooled'' = false, then population variances are not assumed equal and sample standard deviations are not combined.
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::If ''Pooled'' = false, then population variances are not assumed equal and sample standard deviations are not combined.
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:Results are returned in list form as ''{Probabilty value, t-test statistic}''.
  
Results are returned in list form as {Probabilty value, T test statistic}.
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;TTest2( <Sample Mean 1>, <Sample Standard Deviation 1>, <Sample Size 1>, <Sample Mean 2>, <Sample Standard Deviation 2>, <Sample Size 2>, <Tail>, <Boolean Pooled> ):
 
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:Performs a t-test of the difference between two population means using the given sample statistics.  ''Tail'' and ''Pooled'' are defined as above. Results are returned in list form as ''{Probabilty value, t-test statistic}''.
;TTest2[<Sample Mean 1 >,<Sample Standard Deviation 1>, <Sample Size 1>, <Sample Mean 2 >,<Sample Standard Deviation 2 >, <Sample Size 2>, <Tail>,<Boolean Pooled>]
 
:Performs a T test of the difference between two population means using the given sample statistics.  ''Tail'' and ''Pooled'' are defined as above.
 

Latest revision as of 17:17, 7 October 2017


TTest2( <List of Sample Data 1>, <List of Sample Data 2>, <Tail>, <Boolean Pooled> )
Performs a t-test of the difference between two population means using the given lists of sample data. Tail has possible values "<", ">" , "≠" that determine the following alternative hypotheses:
"<" = difference in population means < 0
">" = difference in population means > 0
"≠" = difference in population means ≠ 0
If Pooled = true, then population variances are assumed equal and sample standard deviations are combined in calculation.
If Pooled = false, then population variances are not assumed equal and sample standard deviations are not combined.
Results are returned in list form as {Probabilty value, t-test statistic}.
TTest2( <Sample Mean 1>, <Sample Standard Deviation 1>, <Sample Size 1>, <Sample Mean 2>, <Sample Standard Deviation 2>, <Sample Size 2>, <Tail>, <Boolean Pooled> )
Performs a t-test of the difference between two population means using the given sample statistics. Tail and Pooled are defined as above. Results are returned in list form as {Probabilty value, t-test statistic}.
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