moving mean over 5 cells

I have a dataset where im trying to find the mean of every 5 cells and then divide this by 5

I have the code below, but I have done this in excel and the results are not matching.

f = (movmean(E,5,'Endpoints','discard')/5);

Answer 1

[DGM]

Well yeah I imagine it's off by a factor of 1/5 ... because you're dividing the mean by 5.