题目
An analyst gets the following data: 15, 24, 8, 23, 10, 13, 12, 17, 18, 17 and 19. What is the third quartile of this data?
选项
A.18.
B.18.25.
C.19.
答案
C
解析
Observers：8 10 12 13 15 17 17 18 19 23 24,「huixue_img/importSubject/1564548694592851968.png」N=11，「huixue_img/importSubject/1564548694659960832.png」i.e. the 9th number is 75%， The third quartiles =19.