get variance of set in matlab

To get the variance of a set in MATLAB, you can use the var function. This function returns the sample variance of the input. Here's an example:

main.m
x = [1, 2, 3, 4, 5];
v = var(x);
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In this example, x is a vector of 5 values. The var function is then used to calculate the variance of x, which is stored in the variable v.

If you want to calculate the population variance instead of the sample variance, you can pass an additional argument to the var function. Here's an example:

main.m
x = [1, 2, 3, 4, 5];
v = var(x, 1); % calculate population variance
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In this example, the second argument to the var function is set to 1, which indicates that the population variance should be calculated instead of the sample variance.