Higher June 2018 Paper 6 Q16

OCRHigherCurrent spec8 marksBox Plots

16 The box plot shows the distribution of the salaries for the workers at Bexbridge Biscuits.

Box plot on a salary scale from 10 000 to 90 000 pounds: minimum 15 000, lower quartile 21 000, median 37 000, upper quartile 43 000, maximum 74 000
(a) State the median salary. [1]
(b) Find the interquartile range. [2]
(c) The following salary information is true for workers at Camford Cookies.
  • The highest paid worker earns £85 000.
  • The lowest paid worker earns 20% of the salary of the highest paid worker.
  • 25% of the workers earn more than £50 000.
  • 25% of the workers earn less than £28 000.
  • The median salary is £37 000.

Draw a box plot to show the salaries of the workers at Camford Cookies.

Blank grid above a salary scale from 10 000 to 90 000 pounds
[3]
(d) Make two different comparisons between the distribution of the salaries at Bexbridge Biscuits and the salaries at Camford Cookies. [2]
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