Question

A high school basketball coach counted the number of points her team scored each game. Number of points Number of games 12 3 49 6 55 4 63 5 82 2. 95 5 X is the number of points that a randomly chosen game had. What is the expected value of X? Write your answer as a decimal.

Answer 1

the total number of games = 3 + 6 + 4 + 5 + 2 = 20

$P(x)=\frac{\text{ number of games}}{\text{ total number of games}}$

number of points(x) | Number of games | P(x) = | xP(x)

---------------------------------------------------------------------------------------------------------------------

12 | 3 | 0.15 | 1.8

49 | 6 | 0.30.3 | 14.7