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...

The table below shows the number of students who gained admission into three Nursing Training Schools from the years 2001 to 2003.

(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.

(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.

Read lesson note on Statistical Maps And Diagrams (WAEC)