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TwoMatrixKappaTest Class

Kappa Test for two contingency tables.
Inheritance Hierarchy
SystemObject
  Accord.Statistics.TestingHypothesisTestNormalDistribution
    Accord.Statistics.TestingTwoSampleZTest
      Accord.Statistics.TestingTwoMatrixKappaTest

Namespace:  Accord.Statistics.Testing
Assembly:  Accord.Statistics (in Accord.Statistics.dll) Version: 3.5.0
Syntax
[SerializableAttribute]
public class TwoMatrixKappaTest : TwoSampleZTest
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The TwoMatrixKappaTest type exposes the following members.

Constructors
Properties
  NameDescription
Public propertyAnalysis
Gets the power analysis for the test, if available.
(Inherited from TwoSampleZTest.)
Public propertyConfidence
Gets the 95% confidence interval for the ObservedDifference statistic.
(Inherited from TwoSampleZTest.)
Public propertyCriticalValue
Gets the critical value for the current significance level.
(Inherited from HypothesisTestTDistribution.)
Public propertyEstimatedValue1
Gets the estimated value for the first sample.
(Inherited from TwoSampleZTest.)
Public propertyEstimatedValue2
Gets the estimated value for the second sample.
(Inherited from TwoSampleZTest.)
Public propertyHypothesis
Gets the alternative hypothesis under test. If the test is Significant, the null hypothesis can be rejected in favor of this alternative hypothesis.
(Inherited from TwoSampleZTest.)
Public propertyHypothesizedDifference
Gets the hypothesized difference between the two estimated values.
(Inherited from TwoSampleZTest.)
Public propertyObservedDifference
Gets the actual difference between the two estimated values.
(Inherited from TwoSampleZTest.)
Public propertyOverallVariance
Gets the summed Kappa variance for the two contingency tables.
Public propertyPValue
Gets the P-value associated with this test.
(Inherited from HypothesisTestTDistribution.)
Public propertySignificant
Gets whether the null hypothesis should be rejected.
(Inherited from HypothesisTestTDistribution.)
Public propertySize
Gets the significance level for the test. Default value is 0.05 (5%).
(Inherited from HypothesisTestTDistribution.)
Public propertyStandardError
Gets the standard error for the difference.
(Inherited from TwoSampleZTest.)
Public propertyStatistic
Gets the test statistic.
(Inherited from HypothesisTestTDistribution.)
Public propertyStatisticDistribution
Gets the distribution associated with the test statistic.
(Inherited from HypothesisTestTDistribution.)
Public propertyTail
Gets the test type.
(Inherited from HypothesisTestTDistribution.)
Public propertyVariance1
Gets the variance for the first Kappa value.
Public propertyVariance2
Gets the variance for the second Kappa value.
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Methods
  NameDescription
Protected methodCompute(Double, TwoSampleHypothesis)
Computes the Z test.
(Inherited from TwoSampleZTest.)
Protected methodCompute(Double, Double, Double, TwoSampleHypothesis)
Computes the Z test.
(Inherited from TwoSampleZTest.)
Protected methodCompute(Double, Double, Double, Double, Double, TwoSampleHypothesis)
Computes the Z test.
(Inherited from TwoSampleZTest.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetConfidenceInterval
Gets a confidence interval for the ObservedDifference statistic within the given confidence level percentage.
(Inherited from TwoSampleZTest.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodOnSizeChanged
Update event.
(Inherited from TwoSampleZTest.)
Public methodPValueToStatistic
Converts a given p-value to a test statistic.
(Inherited from TwoSampleZTest.)
Public methodStatisticToPValue
Converts a given test statistic to a p-value.
(Inherited from TwoSampleZTest.)
Public methodToString
Converts the numeric P-Value of this test to its equivalent string representation.
(Inherited from HypothesisTestTDistribution.)
Public methodToString(String, IFormatProvider)
Converts the numeric P-Value of this test to its equivalent string representation.
(Inherited from HypothesisTestTDistribution.)
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Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodToTOverloaded.
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.)
Public Extension MethodToTOverloaded.
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 Matrix.)
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Remarks

The two-matrix Kappa test tries to assert whether the Kappa measure of two contingency tables, each of which created by a different rater or classification model, differs significantly.

This is a two sample z-test kind of test.

References:

  • J. L. Fleiss. Statistical methods for rates and proportions. Wiley-Interscience; 3rd edition (September 5, 2003)
  • Ientilucci, Emmett (2006). "On Using and Computing the Kappa Statistic". Available on: http://www.cis.rit.edu/~ejipci/Reports/On_Using_and_Computing_the_Kappa_Statistic.pdf

See Also