Measures of Center

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

• 20
• 18
• 11
• 19

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

• 4
• 4.1
• 5
• 4.5

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

• 9
• 5
• 3
• 7

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

Median is the

• data
• average
• most frequent
• middle of the numbers

Mode is the

• most frequent
• middle of the numbers
• data
• average

Find the Missing Value that would make the mean of the data set 25

• 22
• 23
• 24
• 26