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2 Statistics

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Question 307

Two delivery companies record delivery times.

median (min)IQR (min)sample sizeA31820B291480\begin{array}{c|ccc}&\text{median (min)}&\text{IQR (min)}&\text{sample size}\\\hline A&31&8&20\\B&29&14&80\end{array}AB​median (min)3129​IQR (min)814​sample size2080​​

a.

Compare the delivery times of the two companies.

[2]
b.

Give one reason why the summaries do not establish that B provides the better service.

[2]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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