1. The age of 11 students visiting the Geographical Museum one weekend were recorded.
The results were: 16, 12, 10, 9, 18, 21, 24, 18, 18, 19, and 19. What will be the 50th percentile of
the 11 students?
A. 18
B. 19
C. 21
D. 24
Mathematics remedial test are 25, 19, 16, 23, 24, 20, 15, 19, 15,