What is the difference between average, mean, median, and mode?

Mean (or arithmetic mean) is a type of average. It is computed by adding the values and dividing by the number of values. Average is a synonym for arithmetic mean – which is the value obtained by dividing the sum of a set of quantities by the number of quantities in the set. An example is (3 + 4 + 5) ÷ 3 = 4. The average or mean is 4. Two other common forms of averages are the median and mode. The median is the middle value of the set when they are ordered by rank – or the point in a series of numbers above and below which is half of the series. An example would be: The median income of a four-person family in Connecticut is $82,517. The mode is the most frequent value in a set of data. If you had nine students taking an exam and the scores were: 91, 84, 56, 90, 70, 65, 90, 90, 30 – then the mode is 90, the most common score. The median (middle) score is 84.


  1. Deb -  August 10, 2016 - 9:02 am

    How do you determine the median if there is an even number of values?

    • Body omar -  August 14, 2016 - 3:02 pm

      arrang the set from smaller to bigger no. Then add the two numbers in the middle and divide them by two

    • Denice Stoudt -  August 21, 2016 - 11:22 am

      do you add the two numbers in the middle to get median if there is an even numbers of value

  2. krishna -  June 24, 2016 - 3:12 am

    When our comes to electricity terminalogy average and mean values are different why this happens ,if average and mean values are equal???

  3. AMAN TYAGI -  June 22, 2016 - 3:08 am

    Please clearly define the median & mode with any mathematical example & mathematical formula.

  4. Nikita -  April 10, 2016 - 4:23 pm

    Well, I wanted to ask you guys this question. What means range??

    • Anonymous -  May 13, 2016 - 4:37 am

      Range is the group of numbers used to calculate the middle value

      • Anonymous -  May 13, 2016 - 4:39 am

        Sorry I meant values instead of numbers


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