Graphs

In this lesson

1. 0:00 Introduction to data visualisation graphs
2. 0:13 Line graphs for tracking trends
3. 1:00 Scatter graphs and variable relationships
4. 2:12 Understanding independent and dependent variables
5. 3:55 Interpreting and presenting information to management
6. 5:19 Common errors in data presentation
7. 6:32 Pie chart angle calculation worked example

About this lesson

We cover three essential graph types: line graphs for tracking trends across multiple products or time periods, scatter graphs for identifying relationships between two variables (like costs and output), and pie charts for showing proportions. You'll understand when to use each type and how to derive meaningful insights, such as using a line of best fit on a scatter graph to predict future costs based on historical data. Beyond choosing the right graph, you'll discover how to interpret and present information responsibly. This means checking your data for errors, ensuring it's complete, labelling clearly, citing sources, and considering whether your audience can reasonably make predictions or draw conclusions from what you've presented. These aren't just best practices—they're essential for giving management the full picture they need to make sound business decisions. The lesson concludes with a practical worked example showing how to calculate angles in a pie chart, demonstrating the kind of straightforward calculation you might encounter in an exam. By mastering these graphing techniques and interpretation principles, you'll be able to communicate complex financial information with clarity and confidence.

Duration: 8m