Answer: Lower Quartile: 3 Upper Quartile: 8 Median: 4
Explanation:
I don't know if this is 100% accurate as I haven't done this in a while, but I'll try my best to help.
1. The median in the data set would count as the middle, so the median would be between all of the numbers there, which in this case is 4.
2. Since the median is 4, the other two halves are split into five, making it easier to find the other quartile, so the middle number in the area to the left is going to be 3.
3. The last area to the right is like I said before, split into 5, so between the five numbers the middle number of that area would be 8.
Sorry for the bad explanation, and I hope this helped!