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1 markSources of Data

CAPE Applied Mathematics Unit 1 · 2009 · Paper 2 · Question 1(a)(iv)

A consumer organization researches the amount of electricity used by households. Several variables are collected: place of residence, number of persons living in the house, number of bathrooms, age of each person, types of appliances, kilowatt hours of electricity used for each of the last six months, and total light bill paid for each of the last six months.

State ONE variable that is continuous.

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Other parts of this question

  1. 1(a)(i)State TWO variables that are qualitative.[2 marks]
  2. 1(a)(ii)State TWO variables that are quantitative.[2 marks]
  3. 1(a)(iii)State ONE variable that is discrete.[1 mark]
  4. 1(b)(i)Explain how a sample of 10 accounts can be selected using the method of random numbers.[4 marks]
  5. 1(b)(ii)Select a random sample of size 10 without replacement from numbers 01 to 65 inclusive using Table 4: Random Sampling Numbers, starting at the third row from…[3 marks]
  6. 1(c)(i)(a)Define the term 'population'.[1 mark]
  7. 1(c)(i)(b)Define the term 'sample'.[2 marks]
  8. 1(c)(ii)State the population of interest in this survey.[1 mark]
  9. 1(c)(iii)What sampling technique was used by the researcher?[1 mark]
  10. 1(c)(iv)Of the 500 students in the school, 90 were fourth year students. Determine the number of fourth year students that will be in the sample of 50.[4 marks]
  11. 1(c)(v)In the sample of 50 students, 10 listed poor canteen service, 15 smelly bathrooms, 8 drug use, 6 too much homework, and 11 other concerns. Determine the angle…[3 marks]

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