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Matchbox machine

Description

Explore variation in the number of matches packed into a matchbox. Check whether a machine is packing matchboxes within acceptable limits. Examine an array of results. Sort the data into four equal groups. Identify the range, median, and quartile values from the table of data. Use the data to build a boxplot. Plot the variation by building a sequence of boxplots. Identify conclusions supported by the evidence. This learning object is one in a series of nine objects.

Key learning objectives

  • Students identify the maximum, minimum, median, and quartiles from a set of data.
  • Students construct and interpret boxplots.
  • Emphasises the need for data to be sorted before analysis.
  • Highlights maximum, median, quartile, and minimum values in an array.

Educational value

  • Students analyse sample variation by constructing and interpreting boxplots.
  • Features automatic collation of sample results and highlights quartile values in an array.
  • Provides a range of alternative answers, including scenarios where the evidence supports more than one conclusion.
  • Provides drill practice to reinforce the five-point summary needed to construct a boxplot.


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