こえーふ - 経済統計練習帳

package math;
 
import org.apache.commons.math3.fitting.WeightedObservedPoints;
import org.apache.commons.math3.fitting.PolynomialCurveFitter;
 
class pro{
 
public static void main(String[] args) {
 
pro test=new pro();
}
 
pro(){
 
final WeightedObservedPoints obs = new WeightedObservedPoints();
obs.add(-1.00, 2.021170021833143);
obs.add(-0.99, 2.221135431136975);
obs.add(-0.98, 2.09985277659314);
obs.add(-0.97, 2.0211192647627025);
obs.add(0.99, -2.4345814727089854);
 
final PolynomialCurveFitter fitter = PolynomialCurveFitter.create(3);
 
final double[] coeff = fitter.fit(obs.toList());
 
System.out.println(coeff[0]);
 
 
 
}
 
}