Use TABLE ll below and the attached map A for Nigeria to answer the questions that follow TABLE II: Volume of Rail Passenger Traffic Generated by Five Nigerian cities, 1973
| CITIES | RAIL PASSENGER TRAFFIC |
| IBADAN | 5,000,000 |
| ENUGU | 3,000,000 |
| MAIDUGURI | 2,500,000 |
| POTR HARCOURT | 1,500,000 |
| MINNA | 1,000,000 |
(a) Represent the statistics with proportional circle,
(b) Outline two advantages of representing data wits proportional symbols
(a) Title: Proportional circles of volumes of Rail 12.5cm Passenger Traffic Generated by five Nigerian cities 1973. Radius of Circles: Let 5m be represented by 1cm.
(i) Enugu is represented by 3/5 cm = 0.6cm radius
(ii) Maiduguri is represented by 25 cm = 0.5cm
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(iii) Port Harcourt is represented by 1.5 cm = 0.3cm
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(iv) Minna is represented 1 cm = 0.2cm
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(v) Ibadan is represented by 5 cm = 1 cm
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TITLE: Proportional circles of volume of Rail Passenger Traffic Generated by 5 Nigerian cities in 1973.
(b) Advantages of proportional symbols:
(i) Symbols can provide quantitative as well as locational information.
(ii) Symbols may be divided proportionally to give further information.
(iii) Give vivid visual impression of distribution on pattern.
(iv)A wide variety of symbols may be used to illustrate data.
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