package math; import org.apache.commons.math3.stat.correlation.PearsonsCorrelation; class pro{ public static void main(String[] args) { pro test=new pro(); } pro(){ double[] y=new double[4]; double[] x=new double[4]; x[0]=1; x[1]=2; x[2]=3; x[3]=4; y[0]=5; y[1]=2; y[2]=3; y[3]=4; double d=new PearsonsCorrelation().correlation(x, y); System.out.println(d); } }
