IDNLearn.com provides a collaborative platform for sharing and gaining knowledge. Our experts are available to provide in-depth and trustworthy answers to any questions you may have.

Which of the following is a weighted average of the squared deviations from the expected value? Question 16 options: A) It is the square root of a random variable's standard deviation. B) It measures the uncertainty of a random variable. C) It is the weighted average of all possible outcomes. D) Higher variance implies low uncertainty.