Eduqas A-Level Business A510QS
Enterprise, Business Plans and Location
Markets, Demand and Market Research
Business Structure and Sources of Finance
Revenue, Costs and Break-Even
Marketing and the Marketing Mix
Financial Planning and Accounts
People in Organisations
Motivation, Management and Employee Relations
Operations Management
Data and Market Analysis
Analysing Business Performance
Aims, Objectives and Strategy
Decision-Making and Investment Appraisal
Change and Risk Management
PEST Factors and the External Environment
Ethical, Legal and Environmental Factors
International Trade, Globalisation and the European Union
Data and Market Analysis
Presenting and interpreting business data
- 3 things to know
- Component 2
Overview
Pie chart used to show, frequency density and why is it used on a histogram and one danger of presenting data selectively.
What you need to know
Answer each one before you reveal it.
How is the angle of a segment on a pie chart calculated?
A firm's annual sales of £480,000 include £120,000 from exports. Calculate the angle of the export segment on a pie chart of sales.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is a pie chart used to show?
Model answer
A pie chart shows how one total is divided between its component parts. Each slice is a share of the whole, so the slices always sum to 100%.
- 2
How is the angle of a segment on a pie chart calculated?
Model answer
The angle equals the component divided by the total, multiplied by 360°. A part worth a quarter of the total therefore takes an angle of 90°.
- 3
A firm's annual sales of £480,000 include £120,000 from exports. Calculate the angle of the export segment on a pie chart of sales.
Model answer
Exports of £120,000 divided by total sales of £480,000 gives 0.25. The segment angle is therefore 0.25 multiplied by 360°, or 90°.
- 4
State one limitation of using a pie chart to present sales data.
Model answer
A pie chart shows proportions but hides the absolute size of the figures behind them. Two businesses with identical slices can differ enormously in total sales.
- 5
What is a histogram?
Model answer
A histogram displays the frequency distribution of continuous data such as age, income or spending. The bars touch each other because the classes run continuously with no gaps.
- 6
How does a histogram differ from a bar chart?
Model answer
A bar chart compares separate categories and leaves gaps between the columns. A histogram covers continuous class intervals, so the columns touch and the area shows frequency.
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