Answer:
Kindly check explanation
Step-by-step explanation:
Given the data on the result of math exam in Ben's class
{35,42,56,68,69,72,72,77,78,78,82,85,87,88,90,93,94,96,96,99}
The 85th percentile score represents the score in which 85 percent of the students in Ben's class or below obtained in the test.
The 85th percentile score :
85%(n+ 1) term
n = number of observations = 20
0.85(20 + 1)th term
0.85(21) = 17.85 term
Take the average of the 17th and 18th terms
(94 + 96) / 2
= 190 / 2
= 95
