Correct Answer tracts 1 and 3 no tracts selected tracts 1 and 2 tracts 2 and 3 all tracts are selected Question 18 When classifying quantitative data, the Natural Breaks (Jenks) classification: creates classes using the standard deviation. creates classes by dividing the values into equal ranges. Correct! creates classes by minimizing the variance between natural groupings of values. creates classes which contain the same number of features. Question 19 Which of the following explains why government generated digital map data in the USA are available at minimal cost to the GIS user? The copyrights are still owned by the British. Correct! The data is public information covered by the Freedom of Information Act. The data are owned by Bill Gates. The data were produced largely by private corporations. Because Al Gore invented the Internet. Question 20
The values of an attribute for a record: Can be numbers. Can be classes. Can be text. Can be coded as missing. Correct! All of the above. Question 21 The two common map projections used for the SPC (State Plane Coordinate) system are: Tranverse Mercator and Albers equal-area conic Correct! Tranverse Mercator and Lambert Conformal Conic Lambert Conformal Conic and Albers equal-area conic Albers equal-area conic and Equidistant conic Question 22 The term resolution with reference to a raster or grid data model is defined in terms of: The map length of a single pixel side. The ground area of a single pixel. The map length of the smallest feature. The ground length of the typical feature. Correct Answer The ground distance of a single pixel side. Question 23 Map projection is a process of converting from Correct Answer a three-dimensional surface to a two-dimensional surface a two-dimensional surface to a three-dimensional surface a two-dimensional surface to a two-dimensional surface
a two-dimensional surface to a planar surface none of the above Question 24 3 / 3 pts Which of the following symbol type will you use for displaying rates of population change by county (or equivalent area unit) in your state? single symbol Correct! graduated color unique value dot Question 25 Examples of line maps in GIS include: dasymetric Correct! flow map proportional symbol cut and paste choropleth Question 26 3 / 3 pts Before carrying out spatial analyses with rasters, numerous Analysis Options must be set, EXCEPT which of the following: analysis extent Correct! classification method analysis output cell size working directory Question 27
In the figure, a six-by-six grid shows two attributes, forest (1) and grassland (2). If we use a "winner takes all" rule for assigning attributes, which digital file representing the grid should be used? 111222, 111122, 111222, 122222, 222222, 222222 Correct! 111122, 111122, 111122, 111122, 212222, 222222 111112, 111112, 111122, 111112, 111112, 111222 111212, 111112, 111222, 122222, 121222, 111222 111EE2, 1111E2, 111E22, 1EEEE2, EEEEE2, EEE222 Question 28 What is important to know during attribute data creation and entry?
- Fall '16
- Cartography, pts, Map projection, spatial data