Choosing Measures of Center

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

• 20

• 18

• 11

• 19

Find the mode:
5, 0, 9, 9, 3, 0, 5, 5, 4

• 9

• 5

• 3

• 7

Find the median:
5, 6, 3, 9, 0, 4, 1, 2, 7

• 4

• 4.1

• 5

• 4.5

What is the definition of the mean?

• The average

• The middle number

• The difference between the highest and lowest numbers

• The number that occurs the most

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

Find the median:
3, 5, 7, 4, 3, 1

• 3 and 4

• There isn't one

• 3.5

• 3

Find the mean:
3.8, 4.2, 4.0, 4.2, 4.2

• 4.08

• 20.4

• 5.1

• 4.2

Find the mode:
3.8, 4.2, 4.0, 4.2, 4.2

• 4.2

• 3.8

• 4.0

Median is the

• data

• average

• most frequent

• middle of the numbers

Mode is the

• most frequent

• middle of the numbers

• data

• average