private void SetColumnValues(DataColumns dataColumns, DataGridViewRow row, Statistics stats)
{
row.Cells[dataColumns.ValueColumn.Index].Value = stats.Length > 0 ? stats.Mean() : (double?) null;
row.Cells[dataColumns.StdDevColumn.Index].Value = stats.Length > 1 ? stats.StdDev() : (double?) null;
row.Cells[dataColumns.StdErrColumn.Index].Value = stats.Length > 1 ? stats.StdErr() : (double?) null;
}