![probability weighted standard deviation probability weighted standard deviation](https://media.cheggcdn.com/media/c23/c234cf7a-4fa9-4e33-a39a-5b05306f0ba5/phpboc7jR.png)
Population and sampled standard deviation calculator.
![probability weighted standard deviation probability weighted standard deviation](https://d2vlcm61l7u1fs.cloudfront.net/media%2Fc89%2Fc894adaf-5cf1-42c0-be88-ef01c1c70b9d%2FphpMjeNAL.png)
![probability weighted standard deviation probability weighted standard deviation](https://media.nagwa.com/820125236285/en/thumbnail_l.jpeg)
The expected value refers, intuitively, to the value of a random variable one would “expect” to find if one could repeat the random variable process an infinite number of times and take the average of the values obtained. Standard deviation () calculator with mean value & variance online.