When joining a CSV file to a shapefile in QGIS, why is it important to create a sidecar file with a .csvt extension before importing the CSV file?

• To import the CSV file as a vector layer with geometry

• To specify the data types for each column in the CSV file

• To convert the CSV file into a shapefile

• To create unique IDs for each feature in the shapefile

When importing a text file into QGIS, which of the following coordinates represent the X-coordinate?

• Latitude

• Longitude

• Elevation

• Population

Which Coordinate Reference System (CRS) should be selected when working with latitude and longitude data in QGIS?

• NAD 83

• UTM Zone 33N

• WGS 84

• EPSG 4326

In QGIS, after loading a delimited text file, which option should be selected in the Geometry definition section if the import chooses incorrect fields for X and Y coordinates?

• Modify the file format

• Manually select the correct fields

• Re-import the file

• Change the projection

What is the purpose of the GEOID field in a shapefile when joining it with a CSV file?

• To store latitude values

• To provide unique identification for each feature

• To track population data

• To format the file for mapping

Why is it necessary to create a .csvt file for a CSV file in QGIS?

• To enable spatial queries

• To specify data types for each column

• To calculate distances

• To convert it to a shapefile

Which option should you select when importing a CSV file as a table without geometry into QGIS?

• Import as vector layer

• Import as raster layer

• No geometry (attribute only table)

• Assign default geometry

When adding a join between a shapefile and a CSV file in QGIS, what must be selected in the 'Join field' and 'Target field' to link the tables?

• Population and Latitude

• X and Y coordinates

• Unique ID fields from both files

• File names

What is the purpose of selecting the 'Graduated' style in QGIS when visualizing a shapefile with joined population data?

• To symbolize data based on geometry

• To assign colors based on population ranges

• To calculate area and perimeter

• To display text labels

In the 'Graduated' style dialog, what does the 'Quantile (Equal Count)' mode do?

• Divides data into equal population groups

• Adjusts the color ramp according to geometry

• Assigns symbols to specific attributes

• Randomly distributes values