FORM 3 GEOGRAPHY NOTES SIMPLIFIED WITH TOPICAL QUESTIONS.

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F 3 GEOGRAPHY

STATISTICS                                                                       COMPOUND/CUMULATIVE/DIVIDED

BAR GRAPH

Major cash crops exported in Kenya in tonnes

Steps

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1. Set cumulative totals for the data each year

• Draw vertical axis(Y) to represent dependent variable
• Draw horizontal axis(x) to represent independent variable
• Label both axis using suitable scale
• Plot the cumulative values for each year
• Use values for components to subdivide the cumulative bar
• The subdivisions are placed in descending order with the longest at the bottom(coffee)
• Shade each component differently
• Put title and key

Advantages

1. Its easy to construct
2. It has good visual impression
3. There is easy comparison for the same component in different bars because of uniform shading
4. Easy to interpret because bars are shaded differently
5. Total value of the bar can be identified easily

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Disadvantages

1. It doesn’t show the trend of components (change over time).
2. Cant be used to show many components as there is limited space upwards
3. Tedious as there is a lot of calculation work involved.
4. Not easy to trace individual contribution made by members of the same bar
5. Poor choice of vertical scale causes exaggeration of bars length leading to wrong conclusions

                                       Analysis

• Coffee was the leading export earner in the five years.
  • Tea was the second leading export earner.
  • Wheat had the lowest export quantity.
  • 1993 recorded the highest export quantity.
  • 1990 recorded the lowest export quantity.

nb-leave ahaif apage for example 2

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PIECHART/DIVIDEDCIRCLES/CIRCLE CHARTS

• A circle which has been subdivided into degrees used to represent statistical data where component values have been converted in degrees.

Major countries producing commercial vehicles in the world in 000s

Steps

1. Convert components into degrees

USA 1800×360/5480=118.2◦

FRANCE 240×360/5480=15.8◦

JAPAN 2050×360/5480=134.7◦

UK 400×360/5480=26.3◦

GERMANY 240×360/5480=15.8◦

RUSSIA 750×360/5480=49.3◦

• Draw a circle of convenient size using a pair of compasses.
• From the centre of the circle mark out each calculated angle using a protractor.
• Shade the sectors differently and provide the key for various shadings.

Advantages

1. Gives a good/clear visual impression

FORM 3 GEOGRAPHY NOTES SIMPLIFIED WITH TOPICAL QUESTIONS.

GET COMPLETE NOTES BY CLICKING THIS LINK;

Mwalimu Plus bring you the necessary materials that you can access in one click. We also publish News, Examinations, Mocks, KCSE Past Papers, Secondary Notes, Primary Resources, CBC Resources, Grade 1-8 Exams, Grade 1-8 Schemes Of Work, Grade 1-8 Notes and More Resources Call/WhatsApp Us, +254705738367 or +254726641534.

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