In this section, you will learn: zz that data can be shown on charts and graphs zz that different charts and graphs can be used to illustrate different types of information
zz how to draw bar charts, pie charts and trend graphs. Data
Data is a collection of facts. You’ll see data presented visually in charts and graphs throughout this book. This section will help you to interpret these charts and graphs. You will also learn how to create your own! We will look at:
• Bar charts • Pie charts • Trend graphs
Bar charts
Bar charts show data in a very simple form. They can help us to make comparisons between two or more pieces of information.
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Data
Bar chart Pie chart
Trend graph Percentage Area
2008
2009
2010
2011 Year : Figure 1.19 Tourist visitors to Ireland 2008–2015
Look at the bar chart above. It shows the number of tourist that visited Ireland between 2008 and 2015. It is easy to compare each year by looking at the graph.
ACT VITY
Look at the bar chart above. Which year had the lowest number of visitors? Which year had the highest number of visitors?
