Answer:
Quartile 1 is 18
Step-by-step explanation:
Arrange the numbers in order from least to greatest;
18, 18, 18, 20, 21, 22, 23, 23, 24, 24
Find the Median = (21+22)/2= 21.5
Find the median (Q1) between 21.5 and 18 = 18
Find the median (Q2) between 21.5 and 24 = 23
