1

WJEC MATHEMATICS

INTERMEDIATE

STATISTICS AND PROBABILITY

TALLY CHARTS, BAR GRAPHS,

AND PICTOGRAMS

2

Contents

Tally Charts

Bar Graphs

Pictograms

Credits

WJEC Question bank

http://www.wjec.co.uk/question-bank/question-search.html

3

Tally Charts

A tally chart is a way of using lines to display information so that it is

simple and quick to find the information we need.

Tallys are grouped in 5s with the 5th line being horizontal or

diagonal.

Example

Thirty two pupils were asked to chose one of the following fruits.

Apple (A), Orange (O), Banana (B), or Grape (G). The following are

the results of their choice

These results can be displayed in the following tally chart

Add up the tallys to complete

the Frequency column

4

Exercise S3

1.

5

Bar Charts

Often in the second part to a tally chart question, we are required to

create a bar chart. Here's an example, with some important tips on

creating bar graphs.

Both axes labelled Title

Bars of equal width

Equal gaps

between bars

Gap before the

first bar, the same

width as the other

gaps

6

Exam Questions S5

1.

7

2.

8

3.

9

4.

10

Pictograms

A pictogram displays data in picture form.

A pictogram will always provide a key so you know how much one

full picture is worth. Take care! You can use half a picture, quarter of

a picture, even three quarters of a picture.

Number of Vauxhall cars seen

Number of Ford cars seen

Number of Toyota cars seen

Number of Renault cars seen

Number of other cars seen

11

Exam Questions S6

1.

12

2.

13

3.