finding MSE of elements in an array

I am trying to calculate MSE of some elements that are in an array, for example:

a=[2,3,4,16,7,19,10]

how can I find MSE for the values of this array?

Answer 1

[Star Strider]

The Wikipedia article on Mean squared error (link) states ‘For an unbiased estimator, the MSE is the variance of the estimator.’ I would use the var (link) function.