Question 3.23: Draw a proportionate bar chart for the employ-ment survey sh...

For this method all that is required is to find the appropriate percentage of the total (5000) for each category of employment. Then, choosing a suitable height of column to represent 100 % mark on the appropriate percentage for each of the 10 employment categories. To save space, only the first five categories of employment have been calculated.

1.      Private business = \left(\frac{750}{5000} \right) \times 100 = 15 %

2.      Public business = \left(\frac{900}{5000} \right) \times 100 = 18 %

3.      Agriculture = \left(\frac{200}{5000} \right) \times 100 = 4 %

4.      Engineering = \left(\frac{300}{5000} \right) \times 100 = 6 %

5.      Transport = \left(\frac{425}{5000} \right) \times 100 = 8.5 %

Similarly,

•      Manufacture = 6.5 %

•      Leisure industry = 14 %

•      Education = 15.5 %

•      Health = 10 %

•      Other = 2.5 %

Figure 3.21 shows the completed bar chart.