Data Presentation (Edexcel A-Level Mathematics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How many key values does a box plot use to summarise data?
How many key values does a box plot use to summarise data?
Five
What percentile does the lower quartile () represent?
What percentile does the lower quartile () represent?
25th percentile
In a box plot, what do the whiskers extend to?
In a box plot, what do the whiskers extend to?
Minimum and maximum
What percentile does the upper quartile () represent?
What percentile does the upper quartile () represent?
75th percentile
What do box plots allow us to see at a glance?
What do box plots allow us to see at a glance?
Spread and skewness
What does cumulative frequency show?
What does cumulative frequency show?
Observations below a value
How is a cumulative frequency value calculated?
How is a cumulative frequency value calculated?
Add to sum of previous frequencies
What can a cumulative frequency graph help estimate?
What can a cumulative frequency graph help estimate?
Median, quartiles, percentiles
Where is the median on a cumulative frequency graph?
Where is the median on a cumulative frequency graph?
Where CF is half the total
For 80 data points, what position gives the 90th percentile?
For 80 data points, what position gives the 90th percentile?
72
What percentage of data falls below the upper quartile ()?
What percentage of data falls below the upper quartile ()?
75%
How are box plots and cumulative frequency graphs related?
How are box plots and cumulative frequency graphs related?
CF determines values for box plots