Cumulative frequency & box plots
Edexcel GCSE Maths revision on Cumulative frequency & box plots. Aligned to the Pearson Edexcel GCSE Mathematics 1MA1 specification. This bank has 16 practice questions on this topic.
Sample questions (3 of 16)
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Question 1
Which specific value is represented by the line drawn inside the box of a box plot?
- A) The median value
- B) The mean average
- C) The lower quartil
- D) The range spread
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Answer: The median value
The line inside the box of a box plot always represents the median. A common misconception is that it represents the mean, but the mean is not typically displayed on a standard box plot.
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Question 2
What is the name of the statistic calculated by subtracting the lower quartile from the upper quartile?
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Answer: Interquartile range
The interquartile range is the difference between the upper and lower quartiles. It is used to measure the spread of the middle half of the data, effectively ignoring extreme outliers.
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Question 3
Which feature of a cumulative frequency graph allows you to estimate the median value of the data set?
- A) Find the fifty percent point
- B) Locate the maximum frequency
- C) Identify the lowest data point
- D) Calculate the modal frequency
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Answer: Find the fifty percent point
To find the median from a cumulative frequency graph, you find half of the total frequency on the y-axis and read across to the curve. Other options are incorrect because they relate to different parts of the distribution or frequency.
Want to test yourself on the remaining cards for this topic?
13 more questions on Cumulative frequency & box plots — plus mistakes tracking and spaced repetition across the whole Maths spec.