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​Q22: Question – Paper 2 – November 2018
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Question
22) Here is some information about 20 trains leaving a station. 
22 a) Work out an estimate of the mean number of minutes late.
[3 marks]

​22 b)The station manager looks at the information in more detail.
​He works out an estimate of the mean using this information. How does his estimate compare with the answer to part (a)?
​Tick one box.
[1 mark]