Q. 13.7( 14 Votes )
Following are the marks of 10 students in mathematics, 52, 75, 40, 70, 43, 40, 65, 35, 48, 52. Calculate the mean marks.
Answer :
We know that,
Where, 
= Mean, xi = observations and n = no. of observations.
⇒ 
= 51
∴ mean marks = 51
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