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

Find the mean , variance and standard deviation :

Find the variance and standard deviation of :

Calcuate the mean, variance and standard deviation of number of heads in two 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 using short cut method.

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

Find the mean, variance and standard deviation using short-cut method

Find the mean, variance and standard deviation using short-cut method

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