public final class Statistics extends Object implements org.apache.hadoop.io.Writable
| Constructor and Description |
|---|
Statistics() |
| Modifier and Type | Method and 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(DataInput in) |
String |
toString() |
void |
write(DataOutput out) |
public void add(double item)
item - a normal double value.public void finalizeComputation()
public void write(DataOutput out) throws IOException
write in interface org.apache.hadoop.io.WritableIOExceptionpublic void readFields(DataInput in) throws IOException
readFields in interface org.apache.hadoop.io.WritableIOExceptionpublic double getMin()
public double getMax()
public double getMedian()
public double getMean()
public double getStandardDeviation()
public double getVariance()
public double getSignalToNoise()
public double getDispersionIndex()
public double getCoefficientOfVariation()
public double getSum()
public int getCount()
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