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

The calculator will find the lower (first) quartile (percentile no. $$$25$$$) of $$$23$$$, $$$24$$$, $$$21$$$, $$$20$$$, with steps shown.

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


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).


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