# Discrete Data Sets and their Mean, Median and Mode Values

### Mean Value

Arithmetic mean value can be calculated by adding together all the values in a set and dividing the result by the number of members in the set. Mean value can be calculated

*x _{mean} = (x_{1} + x_{2} + .. + x_{n}) / n (1)*

*where *

*x _{mean} = mean value*

*x _{1} + x_{2} + .. + x_{n }) = set values*

*n = number of members in the set*

#### Eksample - Mean Value of Data Set

The mean value of set *(3,5,2,5,12)* can be calculated as

*x _{mean} = (3 + 5 + 2 + 5 + 12) / 5 *

* = 5.4*

### Median Value

The median value can often be a better indication of a set that contains extreme values. The median value can be estimated by

- ranking the data set in ascending order of magnitude
- selecting the
**middle member**of the data set

#### Example - Median Value of Data Set

The median value of set *(3,5,2,5,12)* can be calculated by ordering the data in ascending order to

*(2,3,5,5,12)*

The **middle member** - and the **Median Value** - of the ordered data set is* 5*.

### Mode Value

The mode - or modal - value is the most occurring value in a data set.

#### Eksample - Mode Value of Data Set

The modal value of set *(3,5,2,5,12)* can be calculated by counting the occurrence of every value in the data set.

As we can see in this limited data set - the **modal value** - of the data set is* 5*.

### Online Mean and Median Value Calculator

Input csv (comma separated values) data in the box below:

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