Map types Flashcards

1
Q

What are choropleth maps?

A

map which uses shades of colour to show data. Darkest colour = highest number.

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2
Q

When would you use a choropleth map?

A

When showing spatial distribution of data.

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3
Q

What are the strengths of a choropleth map?

A

Shows spatial distribution

Clear and visual > easy to make comparisons/analyse > through use of colour/shading

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4
Q

What are the weaknesses of a choropleth map?

A

Average > doesn’t show disparity
Shows a sudden change when really gradual.
May not give exact/actual data.

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5
Q

What are proportional circle maps?

A

size of the circle shows the amount of data.

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6
Q

When should you use a proportional circle map?

A

When showing data and distribution.

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7
Q

What are the strengths of using a proportional circle map?

A

Shows spatial distribution.
Shows numbers and percentages> and a large range of values
Easy to analyse > as symbols proportional to value > can make comparisons/show difference between places

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8
Q

What are the weaknesses of using a proportional circle map?

A

May overlap and be difficult to read.

Not accurate: can’t find exact data.

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9
Q

What are dot maps?

A

a map that shows the spatial distribution of a variable using many equally sized dots, dot is equal to a given value and plotted where that value occurs.

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10
Q

When should you use a dot map?

A

To show distribution of data.

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11
Q

What are the strengths of using a dot map?

A

Shows DISTRIBUTION

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12
Q

What are the weaknesses of using a dot map?

A

Large number of dots are difficult to count.
Doesn’t show exact data.
Dot is equal to a given value - is anywhere without a dot empty?

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