Number of Items is the number of rows in the item entry list. Title is the text that appears at the top of the applet. Label 1 is the label for the entry field. Label 2 is the label for the result field. Decimals is the number of decimal places in the result.
Units is the units field, shown after the result.
There are then 3 items for each row of data. Value is the entry value to generate the random numbers. Min result is the -3 standard deviation value for the random number generator. You do not need to have a row for every entry value. In the example above, the user can enter values between 5 and 10.