The Table F below shows the number of students who gained admission into three Nursing Training Schools from the years 2001 to 2003.
Table F
(a) Represent the data in Table F 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 for Nursing Training Schools
| A B C
| 40---60 50---40 60---30
| | | | | | |
60--+----+--------+-----+-----+----+
| 2001 2002 2003 2001
| Year
|
Y-axis: 2 cm = 20 students
(b)
(i) The number of students who gained admission into Nursing Training School A for the entire period:
Total = 40 + 60 + 50 = 150 students
(ii) The number of students who gained admission into the three Nursing Training Schools in the year 2003:
Total = 50 + 40 + 40 = 130 students
(iii) The difference in enrollment between students who gained admission into Nursing Training Schools A and C for the entire period:
Total for School A = 40 + 60 + 50 = 150 students
Total for School C = 60 + 30 + 40 = 130 students
Difference = 150 - 130 = 20 students
(c)
One major difference between a simple bar chart and a compound bar chart is that in a simple bar chart, only one set of data is represented, while in a compound bar chart, two or more sets of data are represented side by side. The compound bar chart is used to compare two or more data sets simultaneously. In the compound bar chart, each set of data is represented by a different color, pattern, or shading. The height of the bars in the compound bar chart indicates the quantity or value of each data set.