Questions
The variance of the first n natural numbers is
a
n2−112
b
n2−16
c
n2+16
d
n2+112
detailed solution
Correct option is A
Variance =(SD)2=1nΣx2−Σxn2,∵x¯=Σxn =n(n+1)(2n+1)6n−n(n+1)2n2=n2−112Talk to our academic expert!
Similar Questions
The following information relates to a sample of size . The variance is
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