TwoSampleZTest Class

Two sample Z-Test.

Inheritance Hierarchy

Namespace: Accord.Statistics.Testing
Assembly: Accord.Statistics (in Accord.Statistics.dll) Version: 3.8.0

Syntax

[SerializableAttribute]
public class TwoSampleZTest : HypothesisTest<NormalDistribution>

<SerializableAttribute>
Public Class TwoSampleZTest
	Inherits HypothesisTest(Of NormalDistribution)

The TwoSampleZTest type exposes the following members.

Constructors

	Name	Description
	TwoSampleZTest	Constructs a Z test.
	TwoSampleZTest(Double, Double, Double, TwoSampleHypothesis)	Constructs a Z test.
	TwoSampleZTest(Double, Double, Int32, Double, Double, Int32, Double, TwoSampleHypothesis)	Constructs a Z test.

Properties

	Name	Description
	Analysis	Gets the power analysis for the test, if available.
	Confidence	Gets the 95% confidence interval for the ObservedDifference statistic.
	CriticalValue	Gets the critical value for the current significance level. (Inherited from HypothesisTestTDistribution.)
	EstimatedValue1	Gets the estimated value for the first sample.
	EstimatedValue2	Gets the estimated value for the second sample.
	Hypothesis	Gets the alternative hypothesis under test. If the test is Significant, the null hypothesis can be rejected in favor of this alternative hypothesis.
	HypothesizedDifference	Gets the hypothesized difference between the two estimated values.
	ObservedDifference	Gets the actual difference between the two estimated values.
	PValue	Gets the P-value associated with this test. (Inherited from HypothesisTestTDistribution.)
	Significant	Gets whether the null hypothesis should be rejected. (Inherited from HypothesisTestTDistribution.)
	Size	Gets the significance level for the test. Default value is 0.05 (5%). (Inherited from HypothesisTestTDistribution.)
	StandardError	Gets the standard error for the difference.
	Statistic	Gets the test statistic. (Inherited from HypothesisTestTDistribution.)
	StatisticDistribution	Gets the distribution associated with the test statistic. (Inherited from HypothesisTestTDistribution.)
	Tail	Gets the test type. (Inherited from HypothesisTestTDistribution.)

Methods

	Name	Description
	Compute(Double, TwoSampleHypothesis)	Computes the Z test.
	Compute(Double, Double, Double, TwoSampleHypothesis)	Computes the Z test.
	Compute(Double, Double, Double, Double, Double, TwoSampleHypothesis)	Computes the Z test.
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetConfidenceInterval	Gets a confidence interval for the ObservedDifference statistic within the given confidence level percentage.
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnSizeChanged	Update event. (Overrides HypothesisTestTDistributionOnSizeChanged.)
	PValueToStatistic	Converts a given p-value to a test statistic. (Overrides HypothesisTestTDistributionPValueToStatistic(Double).)
	StatisticToPValue	Converts a given test statistic to a p-value. (Overrides HypothesisTestTDistributionStatisticToPValue(Double).)
	ToString	Converts the numeric P-Value of this test to its equivalent string representation. (Inherited from HypothesisTestTDistribution.)
	ToString(String, IFormatProvider)	Converts the numeric P-Value of this test to its equivalent string representation. (Inherited from HypothesisTestTDistribution.)

Extension Methods

	Name	Description
	HasMethod	Checks whether an object implements a method with the given name. (Defined by ExtensionMethods.)
	IsEqual	Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices. (Defined by Matrix.)
	To(Type)	Overloaded. Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime. (Defined by ExtensionMethods.)
	ToT	Overloaded. Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime. (Defined by ExtensionMethods.)

Remarks

References: