The blue values in the applet represent the
mean of the distribution. The mean appears in the formulas on the left,
the statistics on the right, and the middle line on the graph.
The light green represents the standard
deviation and appears in the formula and on each side of the mean in the
graph.
Change the values of the statistics ( mean and standard deviation ) by
clicking on the value on either side of the graph or through the input
boxes at the bottom.
Change the values of the x and z scores by clicking on
the values below the graph or by dragging the corresponding bars in the
graph.