GCSE Maths (AQA)

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Box Plots

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Statistics Statistics

Box Plots

4:40 Box Plots
Spec S4
Previous Outliers on Scatter Diagrams Next Comparing Cumulative Frequency Graphs & Box Plots
  • A box plot shows the median, quartiles, and range of a set of data
  • It is a quick and easy way to visualize the relation between these key values
  • The ends of the plot represent the smallest and largest data values
  • The box represents the quartiles, with the left side representing the lower quartile and the right side representing the upper quartile
  • The range is the largest value minus the smallest value
  • The interquartile range is the upper quartile minus the lower quartile
  • The whiskers show how far the entire set of data is spread
  • The center line represents the median, the middle value of the data set
  • It is important to be able to read, draw, and analyze box plots to interpret data sets

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