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 Form 4 Geography online lessons on statistical methods

Steps followed when drawing of a choropleth map

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Answer Text:
Drawing of a Choropleth Map:
The following steps are followed:
(i) Draw boundaries of the statistical units
(ii) Calculate average densities for each statistical unit by dividing the quantities in each unit by the unit area.
Density=𝑇𝑜𝑡𝑎𝑙 𝑞𝑢𝑎𝑛𝑡𝑖𝑡𝑦 𝐴𝑟𝑒𝑎 𝑜𝑓 𝑢𝑛𝑖𝑡
(iii) Determine a suitable scale of densities to be used in shading the map
(iv) Indicate lightly in pencil on the map the grade of shading or colouring to be used for each area.
(v) Shade or colour the map, erasing figures
and all other unnecessary information but leaving boundary lines.
(vi) Give a title and key to the map.


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