CmhTable

java.lang.Object
- com.itemanalysis.psychometrics.cmh.CmhTable

```
public class CmhTable
extends java.lang.Object
```
A single 2 x C table for computing Cochran-Mantel-Haenszel DIF statistics.

Author:

J. Patrick Meyer

Constructor Summary

Constructors
Constructor and Description

CmhTable(java.lang.Object focalCode, java.lang.Object referenceCode)

Constructors
Constructor and Description
`CmhTable(java.lang.Object focalCode, java.lang.Object referenceCode)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`double`	`commonOddsRatioDenominator()`
`double`	`commonOddsRatioNumerator()`
`double`	`expectedValue()`
`double`	`focalRight()`
`double`	`focalSize()`
`double`	`focalSumOfScores()`
`double`	`focalWrong()`
`void`	`increment(java.lang.Object groupValue, java.lang.Double itemScoreValue)`
`double`	`meanDifference()` Table calculation for standardized p-dif
`double`	`referenceRight()`
`double`	`referenceSize()`
`double`	`referenceSumOfScores()`
`double`	`referenceWrong()`
`double`	`sumOfScores()` Computes the marginal sum of scores.
`double`	`sumOfSquaredScores()` Computes the marginal sum of squared scores.
`java.lang.String`	`toString()`
`double`	`total()`
`double`	`variance()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CmhTable

public CmhTable(java.lang.Object focalCode,
                java.lang.Object referenceCode)

Method Detail

increment

public void increment(java.lang.Object groupValue,
                      java.lang.Double itemScoreValue)

focalSumOfScores
```
public double focalSumOfScores()
```

referenceSumOfScores
```
public double referenceSumOfScores()
```

focalSize
```
public double focalSize()
```

referenceSize
```
public double referenceSize()
```

meanDifference
```
public double meanDifference()
```
Table calculation for standardized p-dif

Returns:

sumOfScores
```
public double sumOfScores()
```
Computes the marginal sum of scores. This computation is needed for the Cochran-Mantel-Haenszel statistic.

Returns:

sum of scores for the column margin.

sumOfSquaredScores
```
public double sumOfSquaredScores()
```
Computes the marginal sum of squared scores. This computation is needed for the Cochran-Mantel-Haenszel statistic.

Returns:

sum of scores for the column margin

expectedValue
```
public double expectedValue()
```

variance
```
public double variance()
```

commonOddsRatioNumerator

public double commonOddsRatioNumerator()

commonOddsRatioDenominator

public double commonOddsRatioDenominator()

referenceRight
```
public double referenceRight()
```

referenceWrong
```
public double referenceWrong()
```

focalRight
```
public double focalRight()
```

focalWrong
```
public double focalWrong()
```

total
```
public double total()
```

toString
```
public java.lang.String toString()
```
Overrides:

toString in class java.lang.Object

Class CmhTable

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

CmhTable

Method Detail

increment

focalSumOfScores

referenceSumOfScores

focalSize

referenceSize

meanDifference

sumOfScores

sumOfSquaredScores

expectedValue

variance

commonOddsRatioNumerator

commonOddsRatioDenominator

referenceRight

referenceWrong

focalRight

focalWrong

total

toString