Calvin is a train company manager He compares the arrival times of a morning train service for 10 days in the summer and for 10 days in the

winter

In the summer the median number of minutes late was 12.7 minutes.

The range of the number of minutes late was 11 minutes

The results below show the number of minutes late in the winter.

8, 32, 44, 5, 17, 67, 9, 14, 10, 26

Calvin thinks that in the winter

the median number of minutes late increases

the train service is less consistent.

Is Calvin correct?

Show why you think this giving reasons with your answers.

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