-The variance of a probability distribution can be described as:
A)a measure of the riskiness of a probability distribution and is calculated by finding the square root of the probability-weighted squared deviations of the possible outcomes.
B)a measure of the riskiness of a probability distribution and is calculated by finding the probability-weighted squared deviations of the possible outcomes times two.
C)a measure of the amplitude of a probability distribution and is calculated by finding the square root of the probability-weighted squared deviations of the possible outcomes.
D)a measure of the riskiness of a probability distribution and is calculated by finding the probability-weighted squared deviations of the possible outcomes.

Question

-The variance of a probability distribution can be described as:
A)a measure of the riskiness of a probability distribution and is calculated by finding the square root of the probability-weighted squared deviations of the possible outcomes. 
B)a measure of the riskiness of a probability distribution and is calculated by finding the probability-weighted squared deviations of the possible outcomes times two. 
C)a measure of the amplitude of a probability distribution and is calculated by finding the square root of the probability-weighted squared deviations of the possible outcomes. 
D)a measure of the riskiness of a probability distribution and is calculated by finding the probability-weighted squared deviations of the possible outcomes.

Quizplus · Accepted Answer

The variance of a probability distribution measures the riskiness or dispersion of the distribution and is calculated by finding the probability-weighted squared deviations of the possible outcomes from the mean, without taking the square root or multiplying by two.

-The Variance of a Probability Distribution Can Be Described As