Comparative pie charts (Edexcel GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does the size of a comparative pie chart represent?
What does the size of a comparative pie chart represent?
The sample size
How is the area ratio related to sample sizes in comparative pie charts?
How is the area ratio related to sample sizes in comparative pie charts?
Area ratio equals sample size ratio
If a pie chart has a radius of 4cm and another 6cm, how do their sample sizes compare?
If a pie chart has a radius of 4cm and another 6cm, how do their sample sizes compare?
Larger chart's size is 2.25 times
How do you find the number of people in a category with a 90° sector in a 200-person chart?
How do you find the number of people in a category with a 90° sector in a 200-person chart?
Number = (90/360) × 200
In comparing two pie charts, which step is essential first?
In comparing two pie charts, which step is essential first?
Find total sample size for each
Why can similar sector angles mean different numbers in two charts?
Why can similar sector angles mean different numbers in two charts?
Different total sample sizes
What mistake do students often make with sector angles in comparative charts?
What mistake do students often make with sector angles in comparative charts?
Assuming same angles mean same numbers
How do you determine the actual number of people represented by a sector?
How do you determine the actual number of people represented by a sector?
Angle/360 × total sample size
If a sector of 45° in a 300-person pie chart represents how many people?
If a sector of 45° in a 300-person pie chart represents how many people?
75 people
Which is true about same sector angles in different size pie charts?
Which is true about same sector angles in different size pie charts?
They represent different numbers