Question

2. Following are the marks obtained by a batch of 10 students in a

certain class tests in statistics (X) and accountancy (Y).
1 2
Roll No.
3 4
5 6 7 8 9 10
X 63 64 62 32 30 60 47 46 35 28
Y 68 66 35 42 26 85 44 80 3372
In which subject is the level of knowledge of the students higher?​

Answer 1

Students level of knowledge is higher in accountancy (Y) compared to statistics (X).

Explanation:

The level of knowledge of the students in each subject can be known by comparing the mean score of the subjects.

Marks of the students in statistics (X) are: 63 64 62 32 30 60 47 46 35 28

mean =
`(63 +64+62+32+30+60+47+46+35+28)/(10)`

=
`(467)/(10)`

= 46.7

The mean mark of students in statistics (X) is 46.7.

Marks of students in accountancy (Y) are: 68 66 35 42 26 85 44 80 33 72

mean =
`(68+66+35+42+26+85+44+80+33+72)/(10)`

=
`(551)/(10)`

= 55.1

The mean mark of students in accountancy (Y) is 55.1.

It can be inferred that students level of knowledge is higher in accountancy (Y) compared to statistics (X).