# Spatial Analysis and Satellite Imagery in a GIS Quiz Answers

### Spatial Analysis and Satellite Imagery in a GIS Coursera Quiz Answers

Q1. GIS software is no longer provided for this course. Esri provided a limited supply of licenses, and those have all been used. This quiz does not apply to your grade for the course.

• I plan to purchase the software
• Other

#### Quiz 2: Week 1 Quiz

Q1. Based on the points in each sector of this Venn diagram, which of of the options below would select the most number of points?

• A NOT B
• A XOR B
• A AND B
• A OR B

Q2. You have a dataset that indicates people’s snack preferences. Some like chocolate, some like candy, and some like chips, and all combinations in between. Which operator will help you select the individuals that like chocolate, but none of the other two snacks?

• XOR
• NOT
• AND
• OR

Q3. You have a dataset of all census tracts in Toronto which contains the following attribute fields:

Population Density: “Pop_Density”

Private households by household size (i.e. number of households in each size category – 1 person; 2 persons; 3 persons, etc):

Fields contain a total count of households in each size ranking:

• “1_person”
• “2_persons”
• “3_persons”
• “4_persons”
• “5_persons”

How would you structure a query to select census tracts with either a high population density, or a large number of households with 5 or more persons?

(Consider [some value] in the options below to correspond to the lower boundary of the top quintile for either population density, or number of 5 person households.)

• “Pop_Density” > [some value]
• XOR
• “5_persons” > [some value]
• “Pop_Density” > [some value]

OR

• “5_persons” > [some value]
• “5_persons”+”Pop_Density” >= [some value]
• “Pop_Density” > [some value]
• NOT
• “5_persons” > [some value]

Q4. What are the mandatory components of a selection using the “Select by Attributes” dialogue box? (select all that apply)

• field
• operator
• value
• wildcard

Q5. You have been tasked with planning your company’s annual golf tournament. Your coworkers live around the Toronto area, so you wish to select a location that is easy for everyone to get to. You have a feature class of all golf courses in the Greater Toronto Area, and another feature class of Highway 401.

How would you select all of the golf courses that are within 5 km of Highway 401? Which type of selection will you use?

• select by location
• select by attribute
• graphic selection
• all of the above

#### Week 2 Quiz

Q1. In which of the following ways does a spatial join differ from an attribute join? (select all that apply)

• a spatial join doesn’t require a field common to both tables (e.g. primary key)
• a spatial join joins features based on location, rather than attributes
• unlike an attribute join, a spatial join produces a new feature class
• a spatial join can be used to join feature classes of different types, whereas an attribute join must be used on feature classes of the same type (e.g., point, line, polygon)
• in essence, a spatial join and an attribute join are the same, but a different menu would be used for each procedure

Q2. The Union tool performs the geographical version of which Boolean operator?

• AND
• NOT
• OR
• XOR

Q3. In geoprocessing, if one data set is used for two or more processes, this is known as what type of process?

• chained
• concurrent
• parallel

Q4. Raster distances are measured:

• cell center to cell centre
• cell edge to cell edge
• to create discrete distance polygons
• by first creating Thiessen polygons

Q5. Which of the following vector overlay operations will include all of the results of an intersection?

• union
• subtraction
• exclusive OR
• none of the above

#### Week 3 Quiz

Q1. 8-bit radiometric resolution would allow you to display:

• thousands of shades of gray
• millions of shades of gray
• only black and white

Q2. When electromagnetic radiation comes in contact with an object, the radiation can be:

• transmitted
• absorbed
• reflected
• all of the above

Q3. Given a near-infrared image of a landscape, which one of the following land cover types would you expect to have the lowest reflectance values

• forest
• urban
• agricultural crop
• water

Q4. If you need to be able to capture an image of a specific region at any time, you should have a satellite in what type of orbit?

• geostationary
• near-polar
• geo-polar

Q5. You are studying the daily changes in tree foliage colour during the fall. A satellite that passes over only once per year does not have a high enough _ resolution for this type of analysis.

• temporal
• spectral
• spatial

#### Week 4 Quiz

Q1. In a raster weighted overlay, if an input data set is designated as “restricted” it means:

• the overlay function will ignore the restricted data altogether
• overlay calculations will only be done on the areas inside the restricted areas
• overlay calculations will not be performed on the “restricted” areas, and those areas will be included in the output
• the same thing as using a raster “mask”

Q2. In a raster model, reclassification can be described as what type of function?

• local
• focal
• zonal
• global

Q3. If you were mapping rivers in a raster grid, it would be more realistic to define contiguity using the:

• knight’s case
• rook’s case
• queen’s case
• bishop’s case

Q4. The raster function “aggregate”:

• combines two geographically adjacent raster files into one output file
• generates a new raster file with a reduced spatial resolution
• calculates the average value for each zone
• calculates the average value for each region

Q5. Given a raster layer where cell values are distances from a set of points (such as grocery stores), and a vector layer of polygons for the same area, what raster tool could be used to calculate the average of the raster cell values contained inside each polygon?

• intersection
• regional statistics
• focal operator
• zonal statistics

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