TextItemResponseSummary

java.lang.Object
- com.itemanalysis.psychometrics.measurement.AbstractItemResponseSummary
- - com.itemanalysis.psychometrics.measurement.TextItemResponseSummary

```
public class TextItemResponseSummary
extends AbstractItemResponseSummary
```
Stores the item responses and frequency of item resposes for an item. Provides methods for computing overall summary statistics or statistics for each response option.

Field Summary
- Fields inherited from class com.itemanalysis.psychometrics.measurement.AbstractItemResponseSummary
  doubleResponseMap, doubleScoreMap, stringResponseMap, stringScoreMap, totalFrequency, variableName

Constructor Summary

Constructors
Constructor and Description

TextItemResponseSummary(VariableName variableName)

Constructors
Constructor and Description
`TextItemResponseSummary(VariableName variableName)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`java.util.Iterator<java.lang.Double>`	`doubleIterator()`
`double`	`getFrequencyAt(double response)`
`double`	`getFrequencyAt(int response)`
`double`	`getFrequencyAt(java.lang.String response)` Provides the weighted frequency of a response.
`VariableName`	`getName()`
`java.lang.String`	`getOutputString()` Formatted output for the item mean and standard deviation.
`java.lang.String`	`getOutputStringAt(java.lang.String response)` Formatted output for a particlar response.
`double`	`getProportionAt(double response)`
`double`	`getProportionAt(int response)`
`double`	`getProportionAt(java.lang.String response)` Provides the weighted proportion of a response.
`double`	`getSampleStandardDeviationAt(java.lang.String response)`
`double`	`getScoreAt(java.lang.String response)` Item scores should only be accessed through this method.
`double`	`getTotalFrequency()`
`java.lang.String`	`getTotalFrequencyOutputString()`
`void`	`increment(double response)`
`void`	`increment(double response, double freqWeight)`
`void`	`increment(int response)`
`void`	`increment(int response, double freqWeight)`
`void`	`increment(java.lang.String response)` A unit increment of the item reponse count.
`void`	`increment(java.lang.String response, double freqWeight)` An increment of the item response count that uses a frequency weight.
`double`	`mean()` Computes a weighted sample mean.
`double`	`populationStandardDeviation()` Population standard deviation (i.e.
`double`	`populationVariance()` Computes a weighted population variance (i.e.
`double`	`sampleStandardDeviation()` Sample standard deviation (i.e.
`double`	`sampleVariance()` Computes a weighted sample variance (i.e.
`void`	`setScoreAt(java.lang.String response, double score)`
`java.util.Iterator<java.lang.String>`	`stringIterator()`
`java.lang.String`	`toString()`

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

- Constructor Detail
  - TextItemResponseSummary
```
public TextItemResponseSummary(VariableName variableName)
```
- Method Detail
  - increment
```
public void increment(int response)
```
  - increment
```
public void increment(int response,
                      double freqWeight)
```
  - increment
```
public void increment(double response)
```
  - increment
```
public void increment(double response,
                      double freqWeight)
```
  - increment
```
public void increment(java.lang.String response)
```
    A unit increment of the item reponse count.
    
    Parameters:
    
    response -
  - increment
```
public void increment(java.lang.String response,
                      double freqWeight)
```
    An increment of the item response count that uses a frequency weight.
    
    Parameters:
    
    response - an item response
    
    freqWeight - a frequency weight for the response
  - setScoreAt
```
public void setScoreAt(java.lang.String response,
                       double score)
```
  - stringIterator
```
public java.util.Iterator<java.lang.String> stringIterator()
```
  - doubleIterator
```
public java.util.Iterator<java.lang.Double> doubleIterator()
```
  - getFrequencyAt
```
public double getFrequencyAt(java.lang.String response)
```
    Provides the weighted frequency of a response.
    
    Parameters:
    
    response - an item response
    
    Returns:
    
    a frequency weight
  - getFrequencyAt
```
public double getFrequencyAt(double response)
```
  - getFrequencyAt
```
public double getFrequencyAt(int response)
```
  - getProportionAt
```
public double getProportionAt(java.lang.String response)
```
    Provides the weighted proportion of a response.
    
    Parameters:
    
    response -
    
    Returns:
  - getProportionAt
```
public double getProportionAt(double response)
```
  - getProportionAt
```
public double getProportionAt(int response)
```
  - getSampleStandardDeviationAt
```
public double getSampleStandardDeviationAt(java.lang.String response)
```
  - getScoreAt
```
public double getScoreAt(java.lang.String response)
```
    Item scores should only be accessed through this method. Gets the score for a particular response. If a score has not been provided for a response and the response is a Double, it will covert the response to a double and return it. If a score has not been provided for the response and the response is not a double or integer, it will return 0.0.
    
    Parameters:
    
    response - an item reponse
    
    Returns:
    
    score for the item response
  - mean
```
public double mean()
```
    Computes a weighted sample mean. If responses are letters or non-number objects and no scoring is provided, then the sample mean will equal 0.
    
    Returns:
    
    sample mean
  - sampleVariance
```
public double sampleVariance()
```
    Computes a weighted sample variance (i.e. n-1 in denominator). If responses are letters or non-number objects and no scoring is provided, then the sample variance will equal 0.
    
    Returns:
    
    sample variance
  - populationVariance
```
public double populationVariance()
```
    Computes a weighted population variance (i.e. n in denominator). If responses are letters or non-number objects and no scoring is provided, then the population variance will equal 0.
    
    Returns:
    
    sample variance
  - sampleStandardDeviation
```
public double sampleStandardDeviation()
```
    Sample standard deviation (i.e. n-1 in denominator. If responses are letters or non-number objects and no scoring is provided, then the sample standard deviation will equal 0.
    
    Returns:
  - populationStandardDeviation
```
public double populationStandardDeviation()
```
    Population standard deviation (i.e. n in denominator). If responses are letters or non-number objects and no scoring is provided, then the population standard deviation.
    
    Returns:
  - getName
```
public VariableName getName()
```
    Overrides:
    
    getName in class AbstractItemResponseSummary
  - getTotalFrequency
```
public double getTotalFrequency()
```
    Overrides:
    
    getTotalFrequency in class AbstractItemResponseSummary
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - getOutputString
```
public java.lang.String getOutputString()
```
    Formatted output for the item mean and standard deviation. Defaults to two decimal places.
    
    Returns:
    
    formatted output
  - getOutputStringAt
```
public java.lang.String getOutputStringAt(java.lang.String response)
```
    Formatted output for a particlar response. It provides the proportion and sample standard deviation. Defaults to two decimal places.
    
    Parameters:
    
    response - an item response
    
    Returns:
    
    formatted output
  - getTotalFrequencyOutputString
```
public java.lang.String getTotalFrequencyOutputString()
```

Class TextItemResponseSummary

Field Summary

Fields inherited from class com.itemanalysis.psychometrics.measurement.AbstractItemResponseSummary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

TextItemResponseSummary

Method Detail

increment

increment

increment

increment

increment

increment

setScoreAt

stringIterator

doubleIterator

getFrequencyAt

getFrequencyAt

getFrequencyAt

getProportionAt

getProportionAt

getProportionAt

getSampleStandardDeviationAt

getScoreAt

mean

sampleVariance

populationVariance

sampleStandardDeviation

populationStandardDeviation

getName

getTotalFrequency

toString

getOutputString

getOutputStringAt

getTotalFrequencyOutputString