Mean, Median Mode

Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1,0,1,5,6,3,4

• 3.33
• 2.85
• 3
• 3.5

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1
• 6
• 4.5
• 4

If there is an even number of data in the data set how do you find the median?

• order the data and find the middle value
• order the data add the 2 middle values and divide by 2

The mode score on the 6th grade math test was 94! Which of these interpretations must be correct?

• 99 was the highest score on the test.
• More students received a 94 than any other score
• No student scored below a 50
• A score of 91 was slightly below average.

Can there be more than one mode?

• Yes
• No

Find the mean:
28, 18, 19, 18, 17

• 20
• 18
• 11
• 19

Find the median of this data set:

4, 2, 7, 4, 3

• 2

• 5

• 7

• 4

Find the mode of this data set:

67, 74, 95, 98, 98, 99, 102

• 90.4

• 35

• 92

• 98

How many scores are listed in this Stem and Leaf Plot?

• 3
• 6
• 9
• 18

A florist records the amount of money he spent on gasoline each week to deliver orders. The list shows the data for 16 weeks.

32, 38, 40, 44, 46, 47, 49, 53, 55, 58, 62, 65, 68, 70, 72, 81

He put the data in a stem-and-leaf plot. What number did he leave out of the stem-and-leaf plot?

• 32

• 47

• 65

• 84