**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.

## 8 Comments

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

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

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

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

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

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

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

Sorry I meant values instead of numbers