Question

The five-number summary of the distribution of scores on the final exam in Psych 001 last

semester was min =18 Q = 39 Med = 62 Q = 76 Max = 100. A total of 416 students
took the exam. About how many students had scores above
39? (A) 104
(B) 208
(C) 312
(D) 400

Answer 1

First quartile of the distribution is, Q = 39.

i.e 75% of students have scored more than 39.

So, total number of students scored more than 39 are :

`n=(416* 75)/(100)\\\\n=312`

Therefore, number of students scored higher than 39 are 312.

Hence, this is the required solution.