Averages and Probability

Example 5.49

Find the mean of the numbers $8, 12, 15, 9, \text{and }6$.

 

Example 5.50

Example 5.51

For the past four months, Daisy's cell phone bills were $$42.75, $50.12, $41.54, $48.15$. Find the mean cost of Daisy's cell phone bills.

Example 5.52

Find the median of $12, 13, 19, 9, 11, 15, \text{and }18$.

Example 5.53

Kristen received the following scores on her weekly math quizzes:
$83, 79, 85, 86, 92, 100, 76, 90, 88, \text{and }64$. Find her median score.

Example 5.54

The ages of students in a college math class are listed below. Identify the mode.
$18, 18, 18, 18, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 21, 21, 22, 22, 22, 22, 22, 23, 24, 24, 25, 29, 30, 40, 44$

Example 5.55

The data lists the heights (in inches) of students in a statistics class. Identify the mode.

56	61	63	64	65	66	67	67
60	62	63	64	65	66	67	70
60	63	63	64	66	66	67	74
61	63	64	65	66	67	67