Variance of a histogram in matlab

1. How do you calculate variance in MATLAB?
2. What is histogram variance?
3. How do you normalize a histogram in MATLAB?

How do you calculate variance in MATLAB?

y = var( X , W ) computes the variance using the weight vector W . The length of W must equal the length of the dimension over which var operates, and its elements must be nonnegative. var normalizes W to sum to 1 . Use a value of 0 for W to use the default normalization by N – 1 , or use a value of 1 to use N .

What is histogram variance?

The variance is a measure that tells us how spread out a given distribution of data is.

How do you normalize a histogram in MATLAB?

Another method (more straightforward than method 2) to normalize the histogram is to divide by sum(f * dx) which expresses the integral of the probability density function, i.e. The sum of the "Divide by area figure" doesn't equal 1. I see at least 10 bar plot points greater than 0.3.