Mean and Variance of a Linear Function of a Random Variable | |
Summary |
a random variable can be multiplied by a constant and have a constant amount added to it. this can effect the mean, variance and standard deviation. this effect can be worked out from the probability distribution table, if given, or by using a series of formulae. |
Key Skills |
calculate the mean, variance and standard deviation of the probability distribution of a linear function of a random variable. |
Vocabulary |
linear function, random variable, expected value, variance,constant, |