Introduction to median — lesson. Mathematics State Board, Class 7.

UPSKILL MATH PLUS

Learn Mathematics through our AI based learning portal with the support of our Academic Experts!

Median is also one of the ways to measure the central tendency of the given set of data.

Median:

When a set of numbers is arranged in ascending order or descending order, the middle term constitutes the set's median.

Steps to find the median:

Step \(1\): Arrange the numbers in ascending or descending order.

Step \(2\): Count the number of entries, \(N\), on that set.

Step \(3\): Find the middle term using the formulae given below.

If \(N\) is odd, then:

\(\text{Median} =\)

{(\frac{N + 1}{2})}^{th}

\(term\)

If \(N\) is even, then the median is the average

{(\frac{N}{2})}^{th}

and

{(\frac{N}{2} + 1)}^{th}

terms.

That is, \(\text{Median} =\) \(\frac{1}{2}\)\(\Bigg[\)

{(\frac{N}{2})}^{th} term + {(\frac{N}{2} + 1)}^{th} term

\(\Bigg]\)

Did you find an error?

4. Introduction to median