VOCAB: Use the three terms below to fill in the blanks: (Be careful to spell them correctly!)

combination

expected value

permutation

To find the _________________

, multiply the probability of each result times the numerical result itself and then add these all together. Use a _________________

to find the number of ways to select r objects from a set of n objects if the order you select them in matters. Use a _________________

if the order does not matter.