Answer:
Its the THIRD choice.
Step-by-step explanation:
The values in ascending order are:
6 6 7 9 11 14 15 15 17 19 21 23 23 23 28 31
So the median = (15+17)/2 = 16.
The lowest and highest values are 6 and 31.
The lower quartile is 10.
The upper quartile is 23.
