This calculator requires the use of Javascript enabled and capable browsers. This is not just your "Average Calculator"! On second thought, I guess it is. This calculator calculates averages better than the average calculator. Also known as a mathematical mean, the average is the sum of all numbers divided by the number of numbers summed. The mean is an extremely common ( and as it turns out, extremely useful ) mathematical concept.

Begin by entering the numeric values into the new number input box. Please be sure to click on the "Enter Number" button after each entry; the cursor will return to the new number entry box to prepare for the next value entry. There is no reasonable limitation as to the number of entries as long as you follow each entry by clicking on the "Enter Number" button. The number you entered will be placed in the running total for entries and into the box below for display of your entries. After the last value has been entered, click on the "Calculate Average Data" button for the returned average value of the entered data and the number of values entered, as well as the other displayed average data. Actually, you can click on "Calculate Average Data" as often as you wish and it will average the entries up to that point and allow you to continue. Other information displayed and updated with each click of "Calculate Average Data" is the first and last number entered in the session, the lowest and highest values in the session, and the average of those two groups. Clicking the "Clear Values" button will clear all the accumulators and allow you to start over. It uses the formula AV = (X1 + X2 + X3) / X where AV is the average and X is the number of numbers entered and taken into consideration.