Question

students in 6 different classes are 16,18,20,23,27 and m.if arithmetic mean of such students is 21 find m​

Answer 1

Calculating the average using direct method:

Average (X)=

ΣX

N

or, X =

2+3+5+6+8+10+11+13+17+20

10

or, X =

95

10

⇒X=9.5

Hence, the average of the above individual data is 9.5