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Shamsh H.

asked • 06/25/19

Mean and Percentage

5 million students appeared in an exam.

The total marks of the exam were 9.0.

Mean score of male candidates: 5.55/9.0

Mean score of female candidates: 5.66/9.0


How many students or what percentage of students scored 7.5?


Can someone help me with this?


Shamsh H.

Thank you very much for your reply. This is a real-case scenario. It's about the IELTS examination where I was one of the test takers. 5 million students appeared in an exam. The total marks of the exam were 9.0. Mean score of male candidates: 5.55/9.0 Mean score of female candidates: 5.66/9.0 Mean score of male and female candidates: (5.55+5.66)/2= 5.60. As we know, that IELTS exams markings are in terms of 0.5. Therefore, any student appeared in the exam could have got - 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0. How many students or what percentage of students scored 7.5?
Report

06/27/19

1 Expert Answer

By:

Shamsh H.

Thank you very much for your reply. This is a real-case scenario. It's about the IELTS examination where I was one of the test takers. 5 million students appeared in an exam. The total marks of the exam were 9.0. Mean score of male candidates: 5.55/9.0 Mean score of female candidates: 5.66/9.0 Mean score of male and female candidates: (5.55+5.66)/2= 5.60. As we know, that IELTS exams markings are in terms of 0.5. Therefore, any student appeared in the exam could have got - 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0. How many students or what percentage of students scored 7.5?
Report

06/27/19

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