Mean, Mode, Median, Range

Dr. Goodwin is a dentist. This is the number of cavities he found on each day of the week: 1, 0, 1, 5, 0, 3, 4. What is the average (mean) number of cavities?

• 14

• 2

• 7

• 1

Keely has been keeping track of her math test scores this year. What will Keely’s mean grade be in math?

• 84.6%

• 86.1%

• 92.5%

• 95.7%

Find the median of these numbers:

4, 2, 7, 4, 3

• 2

• 5

• 7

• 4

When finding the median, what do you do if there are two middle numbers?

• Add them together and divide by 2

• Write them both as the answer

• Give up

• Pick one

What is the median of this data set?
3 , 17 , 17 , 11 , 8 , 13 , 5 , 18

• 11

• 12

• 13

• 17

What’s the mode?

• 1

• 2

• 5

• 7

Find the mode in this set of numbers: 2, 4, 9, 0, 7, 3

• 3.5

• 0

• no mode

• 5

Owen owns a shop that sells toy trains. During a two week period, this is how many trains he sold each day:

12, 8, 10, 10, 10, 13, 12, 11, 13, 10, 5, 8

Help Owen find the mode.

• 13

• 12

• 11

• 10

What is the mode in this set of numbers:

7, 14, 20, 3, 7, 14, 2, 14, 7

• 7

• 20

• 7 & 14

• no mode

To find the ________, subtract the smallest number from the largest number.

• mean

• median

• mode

• range