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2 Statistics

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Question 200

The weekly call times, in minutes, for 11 students are

17,23,35,36,51,53,54,55,60,77,11017,23,35,36,51,53,54,55,60,77,11017,23,35,36,51,53,54,55,60,77,110.

a.

Find the median and quartiles.

[3]
b.

Using the 1.5×IQR1.5\times\mathrm{IQR}1.5×IQR rule, show that 110 is the only outlier.

[2]
c.

Draw a box plot, showing the outlier clearly.

Figure for question 1

[3]
Markscheme

2 Statistics Questions

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

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