Finding 5th to 15th central moment

Hello everybody, please help me i want to find 5th to 15th central moments of random 7×5 matrix , i dont know how to do it.I tried using moment(x,4)./(std(x)).^4 and cross checked it with kurtosis but this gave me wrong answer.

Answer 1

[Thiago Henrique Gomes Lobato]

The std function has a bias correction which the kurtosis doesn't, if you remove it you get the same result:

rng(31415)
A = randn(7,5);
moment(A,4)./(std(A,1)).^4 % the ,1 in the standard deviation removes the bias correction
kurtosis(A)

ans =

    1.4861    1.9326    1.2991    2.0221    3.1096


ans =

    1.4861    1.9326    1.2991    2.0221    3.1096

Calculating the other central moments should be then trivial, you just have to known how you want define your standard deviation.

[Vedant Chauhan]

Thank you very much.