Chapter 2

Question 1

Nominal Data

Answer 1

values that name or identify an object, such as a street name.

Question 2

Categorical Data

Answer 2

Data that place objects into unranked groups; examples are land use or geology data.

Question 3

Numeric Data

Answer 3

values stored as numbers rather than as names or categories.

Question 4

Unique Values Map

Answer 4

A map type in which each attribute value is assigned its own symbol

Question 5

Ordinal Data

Answer 5

Rank objects without a regular scale.

Question 6

Ratio Data

Answer 6

Data having a regular scale of measurement and a natural zero point, such as precipitation or population.

Question 7

Interval Data

Answer 7

Values that follow a regular scale but have no natural zero point, such as degrees Celsius or pH.

Question 8

Graduated Symbol Map

Answer 8

A map that divides numeric data from a line or point feature class into classes based on value and displays the classes with different size or thickness of symbols.

Question 9

Proportional Symbol Map

Answer 9

A map that displays attribute values with marker or line symbols that are proportional in size relative to the value of the feature.

Question 10

Graduated Color Map

Answer 10

A map that divides numeric data from a polygon feature class into classes based on value and displays the classes with different colors.

Question 11

Choropleth Map

Answer 11

Maps in which each feature, such as a a state, is colored according to the value in a data field.

Question 12

Normalized Data

Answer 12

To divide the values of an attrubute field by the total of the field or my the values in another field.

Question 13

Dot Density Map

Answer 13

A map representing attribute values by a proportional number of randomly place dots.

Question 14

Chart Map

Answer 14

Map showing several different attributes in chart form, with one chart for each feature.

Question 15

Thematic Rasters

Answer 15

A raster that contains categorical or nominal data values, such as land use codes or soil types.

Question 16

Unique Values

Answer 16

A map type in which each attribute value is assigned its own symbol.

Question 17

Classified

Answer 17

A raster display method that dividies values into two or more groups based on their numeric values.

Question 18

Stretched

Answer 18

A display method that spreads the data values over the entire range of symbols available.

Question 19

Slice

Answer 19

To divide the value in a raster into a specified number of even classes.

Question 20

Image Rasters

Answer 20

A raster data layer, usually referring to a raster that displays brightness values, as in a photogragh.

Question 21

Histogram

Answer 21

A graph showing the number of pixels contained for each data value in a raster.

Question 22

Colormap

Answer 22

A set of defined colors matched to specific image pixel values, which determine how the image will appear.

Question 23

Classification

Answer 23

Assigning features to two or more groups based on numeric values in an attribute field.

Question 24

Jenks Method

Answer 24

A way to classify numeric data into ranges defined by naturally occurring gaps in the data histogram.

Question 25

Equal Interval

Answer 25

A classification method in which the user specifies a number of classes that have equal size ranges.

Question 26

Defined interval

Answer 26

A classification method in which the user specifies a specific size range for all the classes.

Question 27

Quantile

Answer 27

A type of map in which each class has approximately the dame number of features.

Question 28

Geometric interval

Answer 28

A classification method that bases the class intervals on a geometric series in which each class is multiplied by a constant coefficient to produce the next higher class.

Question 29

Standard deviation

Answer 29

The classification scheme in which the class breaks are based on the standard deviation values of the data being mapped.

Question 30

Active Frame

Answer 30

The data frame that is visible and responds to changes by the user.

Question 31

Source

Answer 31

(1) a location that produces or initiates the flow of a commodity through a network; (2) a spatial data file that provides the features for a map layer; (3) the original information used to develop a spatial data set.

Question 32

Pathname

Answer 32

A list of folders that must be traversed to locate a particular file, such as c:\mgisdata\usa\states.shp

Question 33

Absolute pathname

Answer 33

File pathname that starts at the drive letter.

Question 34

relative pathname

Answer 34

Path to a file that starts in the current file.

Question 35

Data view

Answer 35

Data frame mode optimized for the display and analysis of map data.

Question 36

Layout view

Answer 36

A mode of ArcMap that is used to design and create a printed map and that allows manipulation of map layers, titles, scale bars, north arrows, and more.

Question 37

dynamic labels

Answer 37

Labels determined from an an attribute and placed on a map automatically each time features are drawn and redrawn.

Question 38

pyramids

Answer 38

A set of rasters with different resolutions that is calculated from a raster and used to speed displays at smaller scales.

Question 39

RGB composite

Answer 39

An image displayed by assigning one band of brightness information to each red, green, and blue color gun in a display monitor.

Question 40

Digital Raster Graphic (DRG)

Answer 40

A scanned image of a USGS topographic map.