Aisha recorded the heights, in centimetres, of some girls - Edexcel - GCSE Maths - Question 10 - 2020 - Paper 2
Question 10
Aisha recorded the heights, in centimetres, of some girls.
She used her results to work out the information in this table:
Least height 142 cm
Lower quartile 154 cm... show full transcript
Worked Solution & Example Answer:Aisha recorded the heights, in centimetres, of some girls - Edexcel - GCSE Maths - Question 10 - 2020 - Paper 2
Step 1
1. Plot the Median Correctly
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Answer
The median has been plotted at 161 cm, instead of its correct value of 162 cm. Aisha should revise the position of the median on the box plot to reflect this.
Step 2
2. Calculate the Upper Quartile
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Answer
The upper quartile needs to be calculated as it hasn't been correctly drawn. Given the interquartile range is 17 cm and the lower quartile is 154 cm, the upper quartile should be plotted at 171 cm (i.e., 154 cm + 17 cm).
