org.apache.commons.math3.stat.descriptive

## Interface StatisticalMultivariateSummary

• ### Method Summary

Methods
Modifier and Type Method and Description
RealMatrix getCovariance()
Returns the covariance of the available values.
int getDimension()
Returns the dimension of the data
double[] getGeometricMean()
Returns an array whose ith entry is the geometric mean of the ith entries of the arrays that correspond to each multivariate sample
double[] getMax()
Returns an array whose ith entry is the maximum of the ith entries of the arrays that correspond to each multivariate sample
double[] getMean()
Returns an array whose ith entry is the mean of the ith entries of the arrays that correspond to each multivariate sample
double[] getMin()
Returns an array whose ith entry is the minimum of the ith entries of the arrays that correspond to each multivariate sample
long getN()
Returns the number of available values
double[] getStandardDeviation()
Returns an array whose ith entry is the standard deviation of the ith entries of the arrays that correspond to each multivariate sample
double[] getSum()
Returns an array whose ith entry is the sum of the ith entries of the arrays that correspond to each multivariate sample
double[] getSumLog()
Returns an array whose ith entry is the sum of logs of the ith entries of the arrays that correspond to each multivariate sample
double[] getSumSq()
Returns an array whose ith entry is the sum of squares of the ith entries of the arrays that correspond to each multivariate sample
• ### Method Detail

• #### getDimension

int getDimension()
Returns the dimension of the data
Returns:
The dimension of the data
• #### getMean

double[] getMean()
Returns an array whose ith entry is the mean of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component means
• #### getCovariance

RealMatrix getCovariance()
Returns the covariance of the available values.
Returns:
The covariance, null if no multivariate sample have been added or a zeroed matrix for a single value set.
• #### getStandardDeviation

double[] getStandardDeviation()
Returns an array whose ith entry is the standard deviation of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component standard deviations
• #### getMax

double[] getMax()
Returns an array whose ith entry is the maximum of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component maxima
• #### getMin

double[] getMin()
Returns an array whose ith entry is the minimum of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component minima
• #### getN

long getN()
Returns the number of available values
Returns:
The number of available values
• #### getGeometricMean

double[] getGeometricMean()
Returns an array whose ith entry is the geometric mean of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component geometric means
• #### getSum

double[] getSum()
Returns an array whose ith entry is the sum of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component sums
• #### getSumSq

double[] getSumSq()
Returns an array whose ith entry is the sum of squares of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component sums of squares
• #### getSumLog

double[] getSumLog()
Returns an array whose ith entry is the sum of logs of the ith entries of the arrays that correspond to each multivariate sample
Returns:
the array of component log sums