The value after dividing by sample size is covariance, which is -3.
It is possible to compute the variance of the following elements 3a;6a;7a whose frequency 3;5;3;2 after calculation result is returned with steps of calculations, for this enter.
How do you calculate percentage variance? A step-by-step guide on how to calculate variance σ 2 using coefficient of variation calculator.
When all random variables are not statistically dependent, the covariance would be negative or non-linear.
The covariance will be zero if the two random variables are not dependent on each other.
Population variance is often used by statisticians whenever they deal with population data.