The mean of a set of numbers is `X.` If each number is decreased by `lambda,` the mean of the new set is-

The mean of a set of numbers is bar(x) . If each number is increased by lambda , then mean of the new set is :

Mean of a set of numbers is bar(x) . If each number is increased by lambda , then the mean of new set is

The mean of a set of numbers is overline(x) . If each number is increased by lambda , the mean of the new set is

The Mean of a set of numbers is overlinex . If each number is increased by lambda , then the mean of the new set is

The mean of a set of numbers is X. If each number is multiplied by z, the mean is

The mean of a set of numbers is X, If each number is multiplied by z, the mean is

The mean of a set of numbers is overline(X) . If each number is divided by 3, then the new mean is

The mean of a set of numbers is overline(X) . If each number is divided by 3, then the new mean is