The following is a relative frequency distribution of grades in an introductory statistics course. If this was the distribution of 200 students,find the frequency for the highest two grades:
A)44
B)118
C)59
D)74
E)35

Question

The following is a relative frequency distribution of grades in an introductory statistics course.  If this was the distribution of 200 students,find the frequency for the highest two grades:
A)44 
B)118 
C)59 
D)74 
E)35

Quizplus · Accepted Answer

To find the frequency for the highest two grades, we need to add the frequencies of the last two class intervals. From the distribution, the last two class intervals are 90-99 and 100-109. Adding their frequencies, we get 74 + 44 = 118. Therefore, the best choice is B.

The Following Is a Relative Frequency Distribution of Grades in an Introductory