The table below shows the number of students who gained admission into three Nursing Training Schools from the years 2001 to 2003. Nursing Training School Y...
Question 1 Report
The table below shows the number of students who gained admission into three Nursing Training Schools from the years 2001 to 2003.
| Nursing Training School | Year 2001 | Year 2002 | Year 2003 |
|---|---|---|---|
| A | 40 | 60 | 50 |
| B | 50 | 40 | 40 |
| C | 60 | 30 | 40 |
(a) Represent the data in the table with a compound bar graph, using the years as the base of the graph (x-axis) and a scale of 2 cm to 20 students on the vertical axis (y-axis).
(b) Calculate: (i) the number of students who gained admission into Nursing Training School A for the entire period; (ii) the number of students who gained admission into the three Nursing Training Schools in the year 2003; (iii) the difference in enrolment between students who gained admission into Nursing Training Schools A and C for the entire period.
(c) Outline one major difference between a simple bar chart and a compound bar chart.
Answer Details
(a) Compound bar graph
Scale on the vertical axis: 2 cm represents 20 students. Each bar represents a year and is divided into sections for Schools A, B and C.
(b)
(i) Total admission to School A, 2001 to 2003
\[40 + 60 + 50 = 150\]
Answer: 150 students.
(ii) Total admission to the three schools in 2003
\[50 + 40 + 40 = 130\]
Answer: 130 students.
(iii) Difference between total admission to Schools A and C
\[\text{School A} = 40 + 60 + 50 = 150\]
\[\text{School C} = 60 + 30 + 40 = 130\]
\[150 - 130 = 20\]
Answer: 20 students.
(c) A simple bar chart has one undivided bar for each item or category, whereas a compound bar chart has each bar subdivided into components to show two or more related sets of data.
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