Question

Find the median of first 15 odd numbers?


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Answer 1

1,3,5,7,9,11,13,15,17,19

Answer 2

1,3,5,7............29
a=1
n=15
d=3-1=2


sn=(n/2)(2a+(n-1)d)
=(15/2)(2(1)+14(2))
=(15)(1+14)
=15(15)
=225.
sum =225
mean =sumof all observations
_________________
no of observations
=225/15
=15
answer is 15