//Calculation button
        private void CalculateToolStripButton_Click(object sender, EventArgs e)
        {
            var selectColumns = SelectTextBox.Text.Replace(" ", string.Empty).Split(',');

            var classColumn = ClassTextBox.Text.Replace(" ", string.Empty);

            if (selectColumns == null || selectColumns.Length == 0 || string.IsNullOrEmpty(classColumn))
            {
                MessageBox.Show(@"Error. Please add data");
            }
            else
            {
                ToConsole(@"Calculating");

                var answer = _nb.Calculate(_newTestObject, _fileData, selectColumns, classColumn);

                ToConsole(@"Answer -> " + answer);
            }
        }