Difference between revisions of "TTest Command"

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<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|statistics}}
<noinclude>{{Manual Page|version=4.0}}</noinclude>
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;TTest( &lt;List of Sample Data>, <Hypothesized Mean>, <Tail> )
{{command|statistics}}
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: Performs a one-sample t-test of a population mean using the given list of sample data.  ''Hypothesized Mean'' is the population mean assumed in the null hypothesis. ''Tail'' has possible values "<", ">" , "≠".  These specify the alternative hypothesis as follows.
;TTest[<List of Sample Data>,<Hypothesized Mean>,<Tail>]
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::  "<"  =  population mean < ''Hypothesized Mean''
:{{description}}
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::  ">"  =  population mean > ''Hypothesized Mean''
;TTest[<Sample Mean>,<Sample Standard Deviation>,<Sample Size>,<Hypothesized Mean>,<Tail>]
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::  "≠"  =  population mean  ≠ ''Hypothesized Mean''
:{{description}}
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: Results are returned in list form as ''{Probability value, t-test statistic}''.
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:{{example|1=<code><nowiki>TTest({1, 2, 3, 4, 5}, 3, "<")</nowiki></code> yields ''{0.5, 0}''.}}
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;TTest( <Sample Mean>, <Sample Standard Deviation>, <Sample Size>, <Hypothesized Mean>, <Tail> )
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: Performs a one-sample t-test of a population mean using the given sample statistics. ''Hypothesized Mean'' and ''Tail'' are defined as above.  Results are returned in list form as ''{Probability value, t-test statistic}''.
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:{{example|1=<code><nowiki>TTest(4, 1, 12, 4, "≠")</nowiki></code> yields ''{1, 0}''.}}

Latest revision as of 10:25, 12 October 2017


TTest( <List of Sample Data>, <Hypothesized Mean>, <Tail> )
Performs a one-sample t-test of a population mean using the given list of sample data. Hypothesized Mean is the population mean assumed in the null hypothesis. Tail has possible values "<", ">" , "≠". These specify the alternative hypothesis as follows.
"<" = population mean < Hypothesized Mean
">" = population mean > Hypothesized Mean
"≠" = population mean ≠ Hypothesized Mean
Results are returned in list form as {Probability value, t-test statistic}.
Example: TTest({1, 2, 3, 4, 5}, 3, "<") yields {0.5, 0}.
TTest( <Sample Mean>, <Sample Standard Deviation>, <Sample Size>, <Hypothesized Mean>, <Tail> )
Performs a one-sample t-test of a population mean using the given sample statistics. Hypothesized Mean and Tail are defined as above. Results are returned in list form as {Probability value, t-test statistic}.
Example: TTest(4, 1, 12, 4, "≠") yields {1, 0}.
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