The variance information

Random vectors characteristics of variance

What is the relationship between the variance and the standard deviation?

Which of the following is true about variance?Group of answer choicesIt measures the uncertainty of a random variableHigher variance implies low uncertainty.It is the square root of a random variable's standard deviationIt is the weighted average of all possible outcomes.

When we talk about error variance in the analysis of variance, we are talking about

Which of the following statements is (are) true about variance?Multiple select question.Variance is a measure of the squared deviations of a security's return from its expected return.Standard deviation is the square root of variance.Variance measures a security's expected return over many periods.Computation of variance requires the use of a computer.Need help? Review these concept res