Find the mean, variance and standard deviation of the number heads when three coins are tossed.

Find the mean, variance and standard deviation of the number of heads in a simultaneous toss of three coins.

Determine variance and standard deviation of the number of heads in three tosses of a coin.

Find the mean, variance and standard deviation of the number of tails in two tosses of a coin.

Find the mean,variance and standard deviation of first n natural numbers.

Find the mean,variance,standard deviation of number 6 in the two throws of a dice.

Find the probability distribution of the number of heads when three coins are tossed.

Find the probability distribution of the number of heads when three coins are tossed.

Find the Probability distribution of the number of heads when three coins are tossed.

Find the probability distributionof the number of heads when three coins are tossed.

Calcuate the mean, variance and standard deviation of number of heads in two tosses of a coin.