01-SI, C# - rextester

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            int[] tablo = {2,4,5,31,46,4,31,6,7,322,3,214,543,2,3};
            //int[] tablo={1,2,3,4,5,16}; //31
            int suma=0;
            for(int i =0; i< tablo.Length; i++)
                suma+=tablo[i];
            
            double srednia = (double)suma/tablo.Length;
            double war = 0;
            double odchylenie = 0;
            
            foreach (int elem in tablo)
                war = (elem - srednia)*(elem-srednia)/tablo.Length;
                
            odchylenie = Math.Sqrt(war);
            
            Console.WriteLine("Suma = " + suma);
            Console.WriteLine("średnia = " + srednia);
            Console.WriteLine("Wariancja = " + war);
            Console.WriteLine("odchylenie = " + odchylenie);
            
                                            
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,14 sec, absolute running time: 0,08 sec, cpu time: 0,05 sec, average memory usage: 11 Mb, average nr of threads: 3