If the sub-total scales are visible, hide them. If the sub-total scales are hidden, show them. Plot a histogram of the score distribution for the selected category sub-total. Calculate the mean, standard deviation, median, mode, and grade distribution for the selected category sub-total. This option is only available when you select a Sub-total Title Box in the worksheet. Sub-totals menu Use this menu to calculate statistics for category sub-totals and change how they are displayed.