Exam GradesScore Count[40–50) 1[50–60) 2[60–70) 4[70–80) 5[80–90) 2[90–100] 1What percentage of students earned less than a grade of 70 on the exam?9%15%47%53%93%
Question
Exam GradesScore Count[40–50) 1[50–60) 2[60–70) 4[70–80) 5[80–90) 2[90–100] 1What percentage of students earned less than a grade of 70 on the exam?9%15%47%53%93%
Solution
To find the percentage of students who earned less than a grade of 70 on the exam, we need to calculate the cumulative count of students who scored less than 70 and divide it by the total number of students.
From the given data, we can see that there are 1 student in the [40-50) range, 2 students in the [50-60) range, and 4 students in the [60-70) range.
To calculate the cumulative count, we add up these counts: 1 + 2 + 4 = 7.
Now, we divide this cumulative count by the total number of students, which is the sum of all the counts: 1 + 2 + 4 + 5 + 2 + 1 = 15.
So, the percentage of students who earned less than a grade of 70 on the exam is (7/15) * 100 = 46.67%.
Therefore, the closest option to the calculated percentage is 47%.
Similar Questions
What percentage of students earned less than a grade of 70 on the exam?9%15%47%53%93%
A gets 40% marks in an exam and he received 40 less marks than passing marks. B gets 70% marks in same exam and received 20 more marks than passing marks. If C gets 65% marks in the same exam, then find the difference between marks received by A and C in the exam.
The chance of a student passing an exam is 20%. The chance of a student passing the exam and getting above 90% marks in it is 5%. GIVEN that a student pass the examination, the probability that the student gets above 90% marks is:
17) Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are:
In an examination, the percentage of students qualified to the students appeared from school 'P' is 70%.In school 'Q', the number of students appeared is 30% more than the students appeared from school 'P' and the number of students qualified from school 'Q' is 50% more than the students qualified from school 'P'.What is the % of students qualified to the number of students appeared from school 'Q' ?80.76%75.5%60.50%43%
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.