Difference between revisions of "TTest2 Command"
From GeoGebra Manual
m |
Noel Lambert (talk | contribs) |
||
Line 1: | Line 1: | ||
<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|statistics}} | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|statistics}} | ||
− | ;TTest2[ | + | ;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: | :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 |
Revision as of 21:37, 22 August 2015
- 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}.