Difference between revisions of "TTest2 Command"
From GeoGebra Manual
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| − | ;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> ]: |
| − | :Performs a | + | :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. | + | ::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. | + | ::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}''. | |
| − | ;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 | ||
Revision as of 10:11, 26 August 2013
- 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}.
