Statistical variant formula from histogram data

Need some help, how i can implement Statistical variant formula from a image histogram..?

Answer 1

[KALYAN ACHARJYA]

Apply var on histcoounts data

[Nayuta Altria]

Can i get the example code...

[KALYAN ACHARJYA]

Is this?

[counts,binLocations]=imhist(image);
var_data=var(counts)

[Nayuta Altria]

Hmm, what is "counts, binLocations"..? That code can change to Another one..?

[KALYAN ACHARJYA]

yes any variable name as you wish