Variance of a Random Variable | |
Summary |
the standard deviation or variance of a probability distribution is a measure of the spread of likely values of a random variable. the variance of the discrete random variable x with e(x) = μ is given by:
|
Key Skills |
calculate the variance of a probability distribution given a table of probabilities using both versions of the formula. |
Vocabulary |
variance, probability distribution, spread, random variable, standard deviation. |