De una serie de datos de menor a mayor encontrar: Rango, promedio, desviación estándar y varianza

#include <iostream>
#include <cmath>
using namespace std;

#define N 9

int main()
{
  int x[N] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
  int i, j, aux;
  for(i = 0; i < N; i++)
    for(j = i+1; j < N; j++)
      if(x[i] > x[j])
      {
        aux = x[i];
        x[i] = x[j];
        x[j] = aux;
      }
  cout << "Orden ascendente: " << endl;
  for(i = 0; i < N; i++)
    cout << x[i] << endl;
  cout << "Rango: " << x[N-1] - x[0] << endl;
  float sum = 0;
  for(i = 0; i < N; i++)
    sum = sum + x[i];
  cout << "Prom