Answer:
19.
Step-by-step explanation:
First arrange in ascending order:
16, 16, 18, 19, 21, 25, 27, 30, 34, 49, 50, 58, 59, 71, 75.
There are a total of 15 numbers, so the median is the 8th number = 30.
The lower quartile is halfway alone the first 7 numbers which is the 4th number and it is 19.
The median which is the middle number