Please answer.

Q.  The pass percentage in different subjects and the no.of  students who appeared in the subjects are given below :
Find the arithmetic mean of pass percentage and the weighted arithmetic mean.

Dear student,

Arithmetic Mean=sum of pass %No. of pass %=66+95+80+55+70+606=4266=71Weighted Arithmetic Mean:-
subject number of student
pass percentage
ENGLISH 45 66
HINDI 40 95
SANSKRIT 20 80
MATHEMATICS 60 55
SCIENCE 55 70
SOCIAL SCIENCE 60 60
Total 280  

Total weighted average i=1nwixii=1nxi
66×45+95×40+80×20+55×60+70×55+60×60280=2970+3800+1600+3300+3850+3600280=19120280=68.28

Regards,
 

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