SECTION B: ANSWER ALL THE QUESTIONS
MULTIPLE CHOICE (2 marks each)
Question 3
[10]
The figures below represent average monthly incomes of farm workers across the 13 regions in Namibia in
Namibian dollars (NS).
[ 2,710 | 2,940 | 4,000 | 3,130 | 2,880 | 2,890 | 2,920 | 3,050 | 2,950 | 3,325 | 2,880 | 2,850 | 2,755 |
The ministry of agriculture has been requested to assess these incomes and come up with an average income
value as the minimum wage for farm workers.
a) What would be the minimum wage based on existing incomes?
[4]
b) A farmer decides that he will pay his workers 25% above the minimum wage, what will be the income
of farm worker in this case?
[4]
c) How much extra income will the farm workers in (b) above be earning compared to the proposed
minimum wage in (a) above?
[2]
QUESTION 4
[10]
The data presents weight gain (in kg) of 14 zebras in Etosha over a period of 4 years:
[7.6] 81]92[68/59]62]61/58] 7.3] 81] 8.8 |7.4[7.7 | 8.2|
a) Construct a stem-and-leaf plot and find the median and maximum weight gain by the zebras over the 4
years.
[5]
b) Construct a box-whisker plot of the data.
[5]
QUESTION 5
[30]
The table below is a grouped frequency distribution of students’ marks obtained in a conservation
agriculture final examination. Based on the information in the table below answer questions a to f.
oe
1
2
3
4
5
6
7
Percentage Class
0-29
30-39
40-49
50-59
60-69
70-79
80-100
Frequency
4
5
11
8
5
11
11