# Lower quartile of $$$23$$$, $$$24$$$, $$$21$$$, $$$20$$$

Related calculators: Upper Quartile Calculator, Five Number Summary Calculator, Box and Whisker Plot Calculator

### Your Input

**Find the lower quartile of $$$23$$$, $$$24$$$, $$$21$$$, $$$20$$$.**

### Solution

The lower (first) quartile $$$Q_{1}$$$ is equal to the percentile no. $$$25$$$.

The percentile no. $$$25$$$ is $$$\frac{41}{2}$$$ (for steps, see percentile calculator).

### Answer

**$$$Q_{1} = \frac{41}{2} = 20.5$$$A**