I have created a matrix/table with an imported dataset. I want to know what the variance is for 3 values at a time but across 68 columns. I would like to do this in an automated way rather than 1 set of values at a time. Is there a way?

I'm new to Mathematica, so if there is a really simple way, I don't know about it yet!

  • $\begingroup$ If your data is stored in data, what does Dimensions[data] say? $\endgroup$
    – Szabolcs
    Commented Apr 17, 2014 at 3:03
  • $\begingroup$ Check the second example in the Basic Examples section of Variance in the docs. $\endgroup$
    – kglr
    Commented Apr 17, 2014 at 3:07
  • $\begingroup$ An example dataset with the desired outcome would be helpful here. $\endgroup$ Commented Apr 17, 2014 at 13:49


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