Measures of Central Tendency

Calculate mean, median and mode for the data below:

2, 3, 3, 4, 6, 7, 8, 8, 8, 9, 10, 12

• 6.7, 7.5, 8

• 7, 8, 9

• 6.5, 8.5, 8

• 6.6, 7, 8

5, 6, 2, 4, 7, 8, 3, 5, 6, 6

Calculate the mean, median and mode for the data above

• 5, 5, 6

• 5.2, 5.5, 6

• 5.2, 6, 6

• 5.1. 5.6, 7

Five people play golf and at one hole their scores are

3, 4, 4, 5, 7

Find (a) the mean (b) the median (c) the mode (d) the range .

• (a) 4.1 (b) 4 (c) 5 (d) 4

• (a) 4 (b) 5 (c) 4 (d) 4

• (a) 4.5 (b) 5 (c) 4 (d) 6

• (a) 4.6 (b) 4 (c) 4 (d) 4

In a survey of 10 households, the number of children was found to be 4, 1, 5, 4, 3, 7, 2, 3, 4, 1

State the mode

• 1

• 3

• 4

• 7

The weights, in grams, of seven sweet potatoes are

260, 225, 205, 240, 232, 205, 214 What is the median weight?

• 225

• 200

• 240

• 205

The mean of a sample of 6 numbers is 3.2. An extra value of 3.9 is included in the sample. Find the new mean.

• 4.3

• 3

• 3.3

• 5.3

The mean number of a set of 5 numbers is 12.7. What extra number must be added to bring the mean up to 13.1?

• 0.4

• 13.1

• 15

• 15.1

A football team keep records of the number of goals it scores per match during a season. The list is shown opposite. Find the mean number of goals per match.

• 1.706

• 1.805

• 1.825

• 1.801

Students in Year 8 are arranged in eleven classes. The class sizes are 23, 24, 24, 26, 27, 28, 30, 24, 29, 24, 27. What is the modal class size (mode) ?

• 24

• 30

• 26

• 27

Find the mean number of cars sold per day.

• 3.5

• 6

• 2.5

• 5.5