I recently started working with moments and cumulants for some statistical analysis and among my research I can’t figure out some of the notation.
It will be written as:
M2,1 and C4,3
I know M represents moment, and 2 represents the second order, but I don’t know what the 1 represents or how to calculate it. Likewise for the C being cumulant, 4 the fourth order, and I don’t know the 3.
If I could get a direction on where to look, and an example on how to calculate them, that would be very helpful. Thank you!