Difference between revisions of "TTest2 Command"
From GeoGebra Manual
Line 1: | Line 1: | ||
− | <noinclude>{{Manual Page|version=4. | + | <noinclude>{{Manual Page|version=4.2}}</noinclude>{{betamanual|version=4.2}} |
{{command|statistics}} | {{command|statistics}} | ||
;TTest2[<List of Sample Data 1>,<List of Sample Data 2>,<Tail>,<Boolean Pooled>]: | ;TTest2[<List of Sample Data 1>,<List of Sample Data 2>,<Tail>,<Boolean Pooled>]: |
Revision as of 09:57, 15 August 2012
This page is about a feature that is supported only in GeoGebra 4.2. |
- 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 {P 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.