#include <triqs/statistics.hpp>
using namespace triqs::statistics;
int main() {
 observable<double> A;
 A << 1.;
 A << 1.5;
 A << .2;
 A << 1.1;
 auto A_j = make_jackknife(A);
 std::cout << A_j << std::endl;
 return 0;
}