Answer:
0
Explanation:
The first step is to locate the median.
The median is the middle value of the numbers arranged in ascending order. If there is no exact middle value then it is the average of the numbers either side of the middle.
- 2, 0, 1, 7, 9, 10 ← ascending order
↑ middle
median =
=
= 4
The lower quartile Q₁ is the middle value of the numbers to the left of the median, that is
- 2, 0, 1
↑
lower quartile Q₁ = 0