Respuesta :

first you list them in ascending order:-


6,9,10,12,13,14,14,15,16,16,16,17,17,18,18,19,20,21,22,24


The 50 th percentile = middle number = mean of 16 and 16


50th percentile = 16 Answer


80th percentile = 19 and 90th = 21