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Data Interpretation - Table Charts - Discussion

Discussion Forum : Table Charts - Table Chart 3 (Q.No. 4)
Table Charts
Directions to Solve

The following table gives the percentage of marks obtained by seven students in six different subjects in an examination.

The Numbers in the Brackets give the Maximum Marks in Each Subject.

Student Subject (Max. Marks)
Maths Chemistry Physics Geography History Computer Science
(150) (130) (120) (100) (60) (40)
Ayush905090607080
Aman1008080408070
Sajal906070709070
Rohit806580806060
Muskan806585955090
Tanvi707565854060
Tarun653550778080

4.
In which subject is the overall percentage the best?
Maths
Chemistry
Physics
History
Answer: Option
Explanation:

We shall find the overall percentage (for all the seven students) with respect to each subject.

The overall percentage for any subject is equal to the average of percentages obtained by all the seven students since the maximum marks for any subject is the same for all the students.

Therefore, overall percentage for:

(i) Maths
= [ 1 x (90 + 100 + 90 + 80 + 80 + 70 + 65) ] %
7
= [ 1 x (575) ] %
7
= 82.14%.
(ii) Chemistry
= [ 1 x (50 + 80 + 60 + 65 + 65 + 75 + 35) ] %
7
= [ 1 x (430) ] %
7
= 61.43%.
(iii) Physics
= [ 1 x (90 + 80 + 70 + 80 + 85 + 65 + 50) ] %
7
= [ 1 x (520) ] %
7
= 74.29%.
(iv) Geography
= [ 1 x (60 + 40 + 70 + 80 + 95 + 85 + 77) ] %
7
= [ 1 x (507) ] %
7
= 72.43%.
(v) History
= [ 1 x (70 + 80 + 90 + 60 + 50 + 40 + 80) ] %
7
= [ 1 x (470) ] %
7
= 67.14%.
(vi) Comp. Science
= [ 1 x (80 + 70 + 70 + 60 + 90 + 60 + 80) ] %
7
= [ 1 x (510) ] %
7
= 72.86%.

Clearly, this percentage is highest for Maths.

Discussion:
19 comments Page 2 of 2.
Fetene Getnet Gebeyehu said:   2 years ago
Why use denominator 7? Anyone, Please clarify to me.
Shivkumar Dave said:   6 years ago
In order to calculate the overall % we have to first take a total of all the marks in each subject divide it by 7. And then again divide the avg. % by max. Marks in that particular subject to get the real overall %.
Shanto said:   7 years ago
What do we mean by the maximum marks obtained in each subject?

i.e It is 60 in history but some students have 80 as marks scored.

Please explain.
Usha said:   1 decade ago
Why we divide it by 7?
Sham Musuley said:   1 decade ago
Calculate the average for each subject with respect to the maximum mark.
Osagie said:   1 decade ago
Just add each of the percentages for all subjects maths obviously will hav the highest but you can divide the answer by 7 to get the average percent mark.
Dema said:   1 decade ago
What do we mean by the maximum marks obtained in each subject?

Example: It is 60 in history but some students have 80 as marks scored.

Please explain.
Tijender said:   1 decade ago
Is it any shortcut to do this?
Hameed said:   2 decades ago
how is it possible..max marks vary?
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