Measures of Centre | Averages | Mean, Median, Mode

If a list of numbers are all whole numbers, the mean must also be a whole number.

• True

• False

When finding the median, you must first:

• Put all numbers in order (smallest to largest).

• Add all the numbers together.

• Find the difference between the biggest and smallest number.

The most common number is called the:

(a)  

A data set can have more than one mode:

• True

• False

Find the mode:

11, 18, 19, 12, 13, 17, 18

• 12

• 17

• 18

• 16

Find the mode:

23, 26, 21, 24, 23, 19, 18, 27, 19

• 19

• 21

• 23

• 19 and 23

Find the median:

13, 17, 28, 31, 12, 18, 14

• 18

• 19

• 17

• 31

Find the median:

41, 35, 34, 39, 31, 43, 37, 29

• 35

• 36

• 37

• 38

Find the mean:

18, 12, 15, 17

• 17

• 12.5

• 16.4

• 15.5

Find the mean:

7, 8, 6, 4, 9, 7, 1

• 6

• 8

• 7

• 5