com.facebook.buck.util

Class Statistics

java.lang.Object

com.facebook.buck.util.Statistics

public class Statistics
extends Object

A crappy version of org.apache.commons.math3.stat.descriptive.SummaryStatistics.

Constructor Summary

Constructors

Constructor and Description
Statistics()

Method Summary

Modifier and Type	Method and Description
void	addValue(long millis) Add a value to the data.
double	getConfidenceIntervalOffset() Get the 97.5% z-score.
double	getMean() Get the mean.
long	getN() Get the count of values.
double	getStandardDeviation() Get the standard deviation.
double	getVariance() Get the standard deviation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Statistics

public Statistics()

Method Detail

addValue

public void addValue(long millis)

Add a value to the data.

getN

public long getN()

Get the count of values.

getMean

public double getMean()

Get the mean.

getVariance

public double getVariance()

Get the standard deviation.

getStandardDeviation

public double getStandardDeviation()

Get the standard deviation.

getConfidenceIntervalOffset

public double getConfidenceIntervalOffset()

Get the 97.5% z-score. [ getMean() - getZScore(), getMean() + getZscore()] gives approximately a nice 95% confidence interval for the mean.