Mean and Median

Investigate properties of the mean and median of a distribution. Then test your knowledge.

Use the menu in the upper-left corner of the applet to switch between the investigate and identify windows.

Investigate window - Use this window to investigate the value of the mean and median for a distribution of numbers you create in the grid.


Choose "Show values" from the menu to display the numeric values of the mean and median.

Identify window – By default, the window displays a distribution of hypothetical test scores (out of 10 points). An orange triangle marks a point in the distribution. Use the buttons at the bottom to identify the position indicated by the orange marker as the mean, the median, both of these, or neither of these. Click the ‘show solution’ button to see the actual positions of the mean and median in the distribution.

Use the test scores button to generate a new hypothetical distribution of test scores and the income button to generate a distribution of hypothetical incomes (in thousands of dollars).