Statistics (thomasjungblut-common 2.0.0 API)

java.lang.Object
- de.jungblut.utils.Statistics

All Implemented Interfaces:

org.apache.hadoop.io.Writable
```
public final class Statistics
extends java.lang.Object
implements org.apache.hadoop.io.Writable
```
Small statistics utility to describe data based on its min/max/mean/median/deviation.

Author:

thomas.jungblut

Constructor Summary

Constructors
Constructor Description

Statistics()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(double item)`	Adds a new data item into the current statistics object.
`void`	`finalizeComputation()`	Finalize the computation to calculate the mean/median and deviation.
`double`	`getCoefficientOfVariation()`
`int`	`getCount()`
`double`	`getDispersionIndex()`
`double`	`getMax()`
`double`	`getMean()`
`double`	`getMedian()`
`double`	`getMin()`
`double`	`getSignalToNoise()`
`double`	`getStandardDeviation()`
`double`	`getSum()`
`double`	`getVariance()`
`void`	`readFields(java.io.DataInput in)`
`java.lang.String`	`toString()`
`void`	`write(java.io.DataOutput out)`

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

Constructor Detail
- Statistics
```
public Statistics()
```

Method Detail

add
```
public void add(double item)
```
Adds a new data item into the current statistics object.

Parameters:

item - a normal double value.

finalizeComputation
```
public void finalizeComputation()
```
Finalize the computation to calculate the mean/median and deviation.

write
```
public void write(java.io.DataOutput out)
           throws java.io.IOException
```
Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException

readFields
```
public void readFields(java.io.DataInput in)
                throws java.io.IOException
```
Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException

getMin
```
public double getMin()
```

getMax
```
public double getMax()
```

getMedian
```
public double getMedian()
```

getMean
```
public double getMean()
```

getStandardDeviation
```
public double getStandardDeviation()
```

getVariance
```
public double getVariance()
```

getSignalToNoise
```
public double getSignalToNoise()
```

getDispersionIndex
```
public double getDispersionIndex()
```

getCoefficientOfVariation

public double getCoefficientOfVariation()

getSum
```
public double getSum()
```

getCount
```
public int getCount()
```

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

toString in class java.lang.Object