Answer:
13
Step-by-step explanation:
Yikes it's been a while since I've done this.
0,3,8,8,11,13,14
Pretty sure upper quartile is 13.
If I remember correctly upper quartile is just the upper division of the median, so median is the second 8, and median of that set is 13. I just checked my work and that's correct :)
brainliest would be epic
