4.3 - Case Study
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Practice Questions
Test your understanding with targeted questions
What is a pie chart used for?
💡 Hint: Think about how pie slices represent parts of a total.
Define 'margin of error'.
💡 Hint: Consider how confident we are in the data.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a pie chart show?
💡 Hint: Think about pie slices!
The margin of error indicates reliability.
💡 Hint: Consider what margin of error represents.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A poll conducted shows that 42% of 200 voters favor Candidate A. If the margin of error is 5%, what can be inferred about the true percentage?
💡 Hint: Subtract and add the margin of error to the reported percentage.
If a pie chart shows that 25% of voters prefer Candidate B from a total of 400 surveyed, how many voters does that represent?
💡 Hint: Use the formula: (percentage/100) * total voters.
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