Represents a test that the difference between the population
means of two samples is equal to a specific
value.
SystemObject Extreme.Statistics.TestsHypothesisTest Extreme.Statistics.TestsTwoSampleTestDouble Extreme.Statistics.TestsTwoSampleTest Extreme.Statistics.TestsTwoSampleTTest
Namespace:
Extreme.Statistics.Tests
Assembly:
Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.1
public sealed class TwoSampleTTest : TwoSampleTest
Public NotInheritable Class TwoSampleTTest
Inherits TwoSampleTest
public ref class TwoSampleTTest sealed : public TwoSampleTest
[<SealedAttribute>]
type TwoSampleTTest =
class
inherit TwoSampleTest
end
The TwoSampleTTest type exposes the following members.
| Name | Description |
---|
 | TwoSampleTTest |
Constructs a new unpaired TwoSampleTTest for
the specified samples.
|
 | TwoSampleTTest(VectorDouble, VectorDouble) |
Constructs a new unpaired TwoSampleTTest for
the specified vector.
|
 | TwoSampleTTest(VectorDouble, VectorDouble, Double) |
Constructs a new unpaired TwoSampleTTest for
the specified samples.
|
 | TwoSampleTTest(VectorDouble, VectorDouble, SamplePairing, Boolean) |
Constructs a new TwoSampleTTest for
the specified vector.
|
 | TwoSampleTTest(VectorDouble, VectorDouble, Double, SamplePairing, Boolean, HypothesisType) |
Constructs a new TwoSampleTTest for
the specified vector.
|
 | TwoSampleTTest(Int32, Double, Double, Int32, Double, Double, Double, SamplePairing, Boolean, HypothesisType) |
Constructs a new unpaired TwoSampleTTest for
the specified samples.
|
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| Name | Description |
---|
 | AssumeEqualVariances |
Gets or sets whether the variances of the two samples are assumed to be equal.
|
 | Count1 |
Gets or sets the number of observations of the first sample.
|
 | Count2 |
Gets or sets the number of observations of the second sample.
|
 | DegreesOfFreedom |
Gets the degrees of freedom of the test.
|
 | Difference |
Gets or sets the proposed difference between the two means.
|
 | Distribution |
Gets the probability distribution used in the hypothesis test.
(Inherited from HypothesisTest.) |
 | HypothesisType |
Gets or sets whether the test is one or two-tailed.
(Inherited from HypothesisTest.) |
 | Mean1 |
Gets or sets the mean of the first sample.
|
 | Mean2 |
Gets or sets the mean of the second sample.
|
 | Name |
Gets the name of the hypothesis test.
(Overrides HypothesisTestName.) |
 | Pairing |
Gets or sets whether the test is paired or unpaired.
|
 | PValue |
Gets the probability that the test statistic would take on the calculated value under the alternate hypothesis.
(Inherited from HypothesisTest.) |
 | Sample1 |
Gets or sets the first sample this test is being applied to.
(Inherited from TwoSampleTestT.) |
 | Sample2 |
Gets or sets the second sample this test is being applied to.
(Inherited from TwoSampleTestT.) |
 | SignificanceLevel |
Gets the significance level used to test the null hypothesis.
(Inherited from HypothesisTest.) |
 | Statistic |
Gets the value of the test statistic.
(Inherited from HypothesisTest.) |
 | Variance1 |
Gets or sets the variance of the first sample.
|
 | Variance2 |
Gets or sets the variance of the second sample.
|
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Use the TwoSampleTTest class to test the hypothesis that the difference between
two population means are equal to a specific value.
The test can be either paired or unpaired. In a paired test, each observation in the first
sample has a corresponding observation in the second sample.
An example of an unpaired test is one that compares the average height of men and women
by choosing random samples of each group. An example of an unpaired test is one that compares
the height of fathers to that of their sons.
Reference