Question

How to calculate quartiles?

Answer 1

Solution:

We can calculate the quartiles using the formulas given below.

First quartile, Q₁ = (n + 1)/4^th term

Second quartile, Q₂ = (n + 1)/2^th Term

Third quartile ,Q₃ = 3(n + 1)/4^th Term

The interquartile range = Upper quartile – Lower quartile.

= Q₃ – Q₁

The first quartile is also known as the lower quartile. The second quartile is the same as the median dividing data into 2 equal parts. The third quartile is also called the upper quartile.

We use the quartile formula to find the value that divides a list of numbers into quarters. The data is arranged in ascending order and is then divided into quartiles. Quartiles divide a set of observations into four parts. Using the quartile formula we can find the first quartile, second quartile, and third quartile.