Q3 of 71 Page 208

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

We know, Average = Mean

Also,



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




⇒ = 60


∴ mean marks = 60


(A)doesn’t match the solution.


(B) doesn’t match the solution.


(D) doesn’t match the solution.

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