Q4 of 71 Page 208

The marks obtained by a student in Math, Physics and Chemistry are 85, 87 and 83 respectively. His mean marks in these subjects are—

We know that,


Where, = Mean, xi = observations and n = no. of observations.




⇒ = 85


∴ mean marks = 85


(A)doesn’t match the solution.


(B) doesn’t match the solution.


(D) doesn’t match the solution.

More from this chapter

All 71 →
2

The median of the given data is—

520, 20, 340, 190, 35, 800, 1210, 50, 80

 3

The marks obtained by four students in statistics are 53, 75, 42 and 70. The average of their marks is—

 5

If the mean of 5, 7, 9 and x is 9, then the value of x is—

 6

The median of the data 2, 3, 4, 7, 5, 1 is—