The first three moments of a distribution about the value 3 of a variable are 2, 10 and 30 respectively. Obtain the first three moments about zero.

The first three moments of a distribution about the value 2 of the variable are 1, 16 and -40 respectively. Find the first three moments about 0 and the variance of the distribution.

In a certain distribution of the first three moments about the value 4 of a variable are 1, 4 and 10 respectively. Find the three moments about mean and beta_1 .

In a certain distribution the first four moments about the value 4 of a varible are 1, 4, 10 and 45 respectively. Find the moments about mean b_1 and b_2 .

The first two moments of a distribution about the value 5 are 3 and 25 respectively. If the mode is 6 obtain pearson’s coefficients of skewness and coefficient of variation.

The first moment about the value 4 of a variable is 3, then its mean is

If the mean and coefficeint of mean diviation about mean of a distribution be 40 and 30% respectively, then the mean deviation about mean will be-

The first three terms in the binomial expansion of (x+y)^n are 1,56 and 1372 respectively. Find the values of x and y.

x, x + 3, x + 9 are first three terms of a G.P. Find the value of x.

A reaction occurs in three steps . The rate constants of the first , second and third steps of the reaction are k_(1), k_(2) and k_(3) respectively and the overall rate constant of the reaction is k=k_(1)k_(2)//k_(3) . If the activation energies of the first , second and third step of the reaction are 30, 44 and 56"kJ.mol"^(-1) respectively , then the overall activation energy of the reaction ("in kJ.mol") is -