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
| 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 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)
(b) Calculation of:- (i) The number of students who gained admission into Nursing Training School A for the entire period A for the entire period =40 +60+ 50 = 150 students (ii) The number of students who gained admission into the three Nursing Training Schools in the year 2003 = 50 + 40 + 40 = 130 students (iii) The difference in enrolment between students who gained admission into Nursing Training Schools A and C for the entire period. = Total enrolment in Nursing Training School A - Total enrolment in Nursing Training School C = 150 students - 130 students = 20 students (c) Major Difference Between a Simple Bar Chart and a Compound Bar Chart:- -The simple bar chart shows only one item or component in a bar while the compound bar chart shows two or more components in one bar. -Simple bar chart requires no calculations whereas a compound bar chart demands cumulative addition of values.
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