Quartile • box-and-whisker<span> plot • interquartile range For the data </span>below<span>, find the median (Q2), first quartile (Q1), and third quartile (Q3). 39 27.5 Of the </span>25<span> test scores, </span>15<span> scores are less than or equal to 85. ... Step 3 </span>Draw<span> a </span>number line<span>. </span>20 40 60<span> 80 100 120 140 160 180 200 220.</span>