Hi,
I'm doing some analysis on data that has the following time intervals, however when I calculate the mean on two different ways (just for sanity) I ran into the following problem.
I have two arrays:
A = [NaN 1,57031250000000 1,60156250000000 1,71093750000000 1,65234375000000 1,51367187500000 1,49804687500000 1,49414062500000 1,59179687500000 1,41015625000000];nanmean(A) = 1.5603B = [NaN 1,64648437500000 0,796875000000000 0,667968750000000 1,65820312500000 1,69140625000000 1,39062500000000 1,66015625000000 1,40039062500000 1,57226562500000 1,65429687500000];nanmean(B) = 1.4139
Now I have put them behind each other in a [A B] way.
C = [A B];nanmean(C) = 1.4832
However this mean is not the same as the mean of A and B done separately.
(1.5603 + 1.4139)/2 = 1.4871
How is this possible and why is it different? Is this because of the NaNs?
Best Answer