Data Presentation – Basic 5 Mathematics Lesson Note (Third Term)

Data Presentation

Topic: Data Presentation

Data presentation is the representation of data or information for easy reading and interpretations.

Data can be presented in pictograms, bar graphs or frequency tables.

Pictogram

A pictogram is the representation of data using pictures. For example, the following are types of vehicle that passes through a street in an hour.

🚲🚲🚲 = 3 bicycles

🚗🚗🚗🚗🚗 = 5 cars

🐪🐪🐪🐪🐪🐪🐪 = 7 camels

🚌🚌🚌🚌 = 4 buses

🚛🚛🚛🚛🚛🚛 = 6 lorries

Bar Graph

It is a way of representing information pictorially, using rectangular bars of equal widths. The spaces between the bars are the same. The height of the bar represents the number of times the event occurs. A bar graph can be horizontal or vertical.

The graph below shows the number of pupils who like different fruits.

Evaluation

Question 1

The table below shows how Pupils in class 5 of Island Builders Baptist School travel to school:

Tasks:

1. Draw a bar graph to show the information above: 
2. What is the most preferred method of travel? 
3. How many more Pupils travel by car than bus? 

Solutions

Answer to Question 2: Walking is the most preferred method of travel (18 pupils).

Answer to Question 3: Car travelers (12) – Bus travelers (10) = 2 more pupils travel by car than bus.

Bar Graph for Transportation Data

Key Learning Points

• Pictograms use pictures or symbols to represent data
• Bar graphs use rectangular bars to show data visually
• The height or length of bars represents the frequency or amount
• Bar graphs make it easy to compare different categories of data
• Always include labels and titles for clear understanding