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Making Statistics Vital
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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
Measures of Centre and Spread: a Small Sample
This activity highlights the difficulty finding quartiles for small samples sizes as there appears to be more than one method to be found dependent upon the book being used. In this activity a sample size of 11 is chosen as finding the quartiles for this sample size is straightforward. Students are told the number of elements in the data set, the value of the interquartile range and the value of the variance and have to suggest what the values in the sample might be. The write up of the possible solutions leads to a meander through many other areas of mathematics.
This resource is part of the Making Stats Vital collection from Jonny Griffiths.
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