Variance function in matlab

The variance function in matlab "var" by default normalizes V by N-1 if N>1, where N is the sample size

If I want to normalize by the sampel size "N" NOT N-1, is it right to use:

V = var(X,1)

if I were to normalize by the sample size "N"?

Regards

Ajay

Answer 1

[Guillaume]

Yes, this is exactly what it says in the documentation.

Weight, specified as one of:

• 0 — normalizes by the number of observations-1. If there is only one observation, the weight is 1.
• 1 — normalizes by the number of observations.
• a vector made up of nonnegative scalar weights corresponding to the dimension of A along which the variance is calculated.