Mapping GIS Data

Question 1

Rainbow ramps are generally better for what type of data?

Answer 1

Continuous rasters (rarely work for polygons)

Question 2

Rainbow color schemes should be avoided for…

Answer 2

Ratio data, because it’s hard to interpret. Saturation changes are better.

Question 3

Temperature (measured in degrees) represents what type of data?

Answer 3

Interval data

Question 4

Nominal data is best represented by what type of map?

Answer 4

Single symbol map

Question 5

Categorical data is best represented by what type of map?

Answer 5

Unique values map

Question 6

Ordinal data is best represented by what type of map?

Answer 6

Unique values map or graduated color map

Question 7

Ratio/interval data is best represented by what type of map?

Answer 7

Graduated color = choropleth

Question 8

Give an example of nominal data

Answer 8

County names

Question 9

What does ordinal data do?

Answer 9

Ranks categories along an arbitrary scale (good, better, best)

Question 10

Jenks/natural breaks classifies data in what way?

Answer 10

It searches for natural breaks in the data

Question 11

Equal interval classifies data in what way?

Answer 11

Divides data into equally spaced classes based on a specific number of classes (best for uniformly distributed data).

Question 12

Quantile classification divides data in what way?

Answer 12

Equal number of features in each class.