Find the standard deviation of first 10 natural numbers.

Find the variance of first n natural numbers.

Find the sum of first n even natural numbers.

Find the sum of first 100 natural numbers divisible by 3.

The sum of first n odd natural number is

Chosse the correct one The sum of first 100 natural number is

Find the standard deviation (SD) of Poisson distribution if its mean is 9.

What is the sum of the cubes of first n natural numbers?

Find the sum of first n terms of even natural numbers .

Find the mean deviation of the set of numbers 3, 4, 7 9, 9, 10 and 14 from '(ii) median.

The mean of a binomial distribution is 4 and its standard deviation is sqrt3 . Obtain the values of 'n', 'p' and 'q'.