Which of the following is true about variance?
A)It measures the uncertainty of a random variable.
B)Higher variance implies low uncertainty.
C)It is the square root of a random variable's standard deviation.
D)It is the weighted average of all possible outcomes.

Question

Quizplus · Accepted Answer

Variance measures the degree of spread or variability in a set of data or in the outcomes of a random variable. A higher variance indicates greater variability, which in turn implies a greater degree of uncertainty. Therefore, option A is the correct statements, while options B, C, and D are incorrect.

Which of the Following Is True About Variance