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3 marksData Analysis

CAPE Applied Mathematics Unit 1 · 2011 · Paper 2 · Question 2(a)(iii)

A cumulative frequency curve shows the waiting time in minutes for 100 persons in a clinic.

Determine the number of persons who waited 20 minutes or more at the clinic.

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Other parts of this question

  1. 2(a)(i)Determine the median waiting time for the distribution.[2 marks]
  2. 2(a)(ii)Calculate the interquartile range for the distribution.[3 marks]
  3. 2(b)(i)a)Using groups such as 0 – 4, 5 – 9, ..., 25 – 29 and 30 – 34, draw a stem and leaf diagram.[3 marks]
  4. 2(b)(i)b)State the mode(s).[2 marks]
  5. 2(b)(i)c)Calculate the median.[2 marks]
  6. 2(b)(i)d)Determine the interquartile range.[3 marks]
  7. 2(b)(i)e)Find the 8% trimmed mean.[3 marks]
  8. 2(b)(i)f)State the shape of the distribution.[2 marks]
  9. 2(b)(ii)Which of the following measures of a distribution are affected by outliers: a) Mode, b) Mean, c) Median, d) Range?[2 marks]

More practice: the rest of this paper · more Data Analysis questions · all CAPE Applied Mathematics Unit 1 past papers