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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.
Shanto said:   6 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.
Sham Musuley said:   1 decade ago
Calculate the average for each subject with respect to the maximum mark.
Palak said:   1 year ago
I am not understanding this. Please anyone help me to get this.
Rah said:   1 decade ago
Just add the given percentages that is maths=575 is highest.
(1)
Fetene Getnet Gebeyehu said:   1 year ago
Why use denominator 7? Anyone, Please clarify to me.
Chaitanya said:   4 months ago
How to solve this? Anyone please explain to me.
Hameed said:   1 decade ago
how is it possible..max marks vary?
Tijender said:   1 decade ago
Is it any shortcut to do this?
Usha said:   9 years ago
Why we divide it by 7?
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