Similar to the pie chart, the histogram view gives users a graphical way to adjust curves.
When 'View Sidebar' is checked, a thumbnail of the histogram will be shown on the right hand side of the screen. When the user double clicks the thumbnail, or clicks on 'Histogram' from the 'View' drop down menu, a histogram dialog will be displayed on the screen. See figure 2.6.1a.
When the user hovers the mouse over a line additional information is shown. The color and location of the line are dependent on the final grade scheme.
Other assignments and categories are also viewable. The user selects the category or assignment from the drop down menu. Sub-categories are shown using arrows items without arrows are graded items. However, the user will not be able to modify the grade scheme for these items.
The grade scheme is also applied to these assignments, as shown in figure 2.6.1e.
When the user creates a new final grade scheme the histogram will update to display this. For example if the user creates a +/- final grade scheme it will be shown in the histogram.
In this example of histogram manipulation a 5 letter grade scheme is shown for easy understanding. The user can alter the grade scheme by clicking and dragging the lines of appropriate color to the grade.
The user can also collapse a grade area of the histogram by dragging one grade area into another grade area.