public NumCharacteristics(Dictionary<double, double> distr)
		{
			InitializeComponent();
			solver = new NumericSolver(distr);

			var mean = solver.Mean();
			var dispersion = solver.Dispersion();
			var standard_deviation = solver.StandartDeviation();
			var s_dispersion = solver.SDispersion();

			tbMean.Text = mean.ToString("N2");
			tbDispersion.Text = dispersion.ToString("N2");
			tbStandartDeviation.Text = standard_deviation.ToString("N2");
		}