Thirty students at Eastside High School took the SAT on the same Saturday.Their raw scores are given next. Consider a frequency distribution of the data that groups the data in classes of 1400 up to 1600,1600 up to 1800,1800 up to 2000,and so on.What is the approximate relative frequency of students who scored more than 1600 but less than 1800?
A) 0.17
B) 0.23
C) 0.40
D) 0.77

Question

Thirty students at Eastside High School took the SAT on the same Saturday.Their raw scores are given next.  Consider a frequency distribution of the data that groups the data in classes of 1400 up to 1600,1600 up to 1800,1800 up to 2000,and so on.What is the approximate relative frequency of students who scored more than 1600 but less than 1800?
A) 0.17 
B) 0.23 
C) 0.40 
D) 0.77

Quizplus · Accepted Answer

To calculate the relative frequency of students who scored between 1600 and 1800, we need to count the number of students in that range and divide it by the total number of students. From the given raw scores, we see that three students scored between 1400 and 1600, five between 1600 and 1800, and 22 between 1800 and 2000. Therefore, the relative frequency of students who scored between 1600 and 1800 is 5/30 or approximately 0.23. The best choice is therefore (B).

Thirty Students at Eastside High School Took the SAT on the Same