Statistical Techniques in Business Management

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SECTION A           

Based on the information provided below, answer questions 1 to 6.

The average monthly expenditure (in Rand) on fuel to power domestic generators by 20 randomly selected Johannesburg-based households is shown in the Table A below.

Table A: average monthly expenditure (in Rand) on fuel to power domestic generators by 20 households

3 000 1 500 2 000 2 500 1 800 1 100 3 900 2 300 2 100 1 600
2 900 1 400 1 800 2 200 1 900 3 800 3 600 3 100 2 700 1 800

QUESTION 1

Using the raw data provided in Table A, above, determine the measures of central tendency.

  1. The mean, median and mode of the data in Table A are: R2 335, R2 150, and R1800
  2. The mean, median and mode of the data in Table A are: R2 350, R2 100, and R1800
  3. The mean, median and mode of the data in Table A are: R2 335, R2 200, and R1800
  4. The mean, median and mode of the data in Table A are: R2 350, R2 150, and R1800

 

QUESTION 2

Using the raw data provided in Table A, above, determine the standard deviation and variance of the monthly fuel expenditure of the 20 households.

  1. The standard deviation and variance of the monthly fuel expenditure of the 20 households are R606 158 and 38
  2. The standard deviation and variance of the monthly fuel expenditure of the 20 households are R606 158 and 78
  3. The standard deviation and variance of the monthly fuel expenditure of the 20 households are R661 579 and 38
  4. The standard deviation and variance of the monthly fuel expenditure of the 20 households are R661 579 and 78
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