public void CreateGraphs()
 {
     string dir = String.Empty;
     CorrelationCalc correlation = new CorrelationCalc();
     double[] dependents = new double[] { 43, 21, 25, 42, 57, 59 };
     double[] independents = new double[] { 99, 65, 79, 75, 87, 81 };
     double[] independents2 = new double[] { 65, 99, 81, 87, 75, 79 };
     correlation.SetDependents(dependents, "IQ");
     correlation.AddIndependents(independents, "reading time");
     correlation.AddIndependents(independents2, "sleeping time");
     correlation.MakeGraphs(dir, true, true);
 }