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Graded Quiz: Advanced Visualizations and Geospatial Data :Data Visualization with Python (Applied Data Science Specialization) Answers 2025

1. Question 1

Seaborn is based on Matplotlib.

  • ✅ True

  • ❌ False

Explanation:
Seaborn is a high-level interface built on top of Matplotlib.


2. Question 2

Default map style in Folium:

  • ✅ Open Street Map

  • ❌ Stamen Terrain

  • ❌ Stamen Toner

  • ❌ Arial

Explanation:
Folium loads OpenStreetMap tiles by default.


3. Question 3

Initial zoom level code in Folium:

  • ✅ zoom_start=parameter

  • ❌ {zoom_start} parameter

  • ❌ (zoom_start) parameter

  • ❌ zoom-start parameter

Explanation:
Example: folium.Map(location=[lat,lon], zoom_start=10)


4. Question 4

Parameter specifying center latitude & longitude:

  • ❌ Geographic

  • ❌ Destination

  • ❌ Navigation

  • ✅ Location

Explanation:
location=[lat,lon] sets map center.


5. Question 5

Represent specific locations / points of interest:

  • ❌ Zoom function

  • ✅ Markers

  • ❌ Locations

  • ❌ Navigation

Explanation:
Folium markers show clickable location icons.


6. Question 6

Choropleth map type:

  • ❌ Open Street Map

  • ✅ Thematic

  • ❌ Stamen Toner

  • ❌ Stamen Terrain

Explanation:
Choropleths show thematic data by color shading.


7. Question 7

Folium is a _______ library:

  • ❌ Choropleth

  • ❌ Folium

  • ✅ Python

  • ❌ Data

Explanation:
Folium is a Python library for interactive maps.


8. Question 8

Choropleth requires GeoJSON file.

  • ✅ True

  • ❌ False

Explanation:
GeoJSON provides boundary shapes for regions.


9. Question 9

Specialized plot types in Seaborn (Select two):

  • ❌ Bar plot

  • ✅ Regression plot

  • ✅ Categorical plot

  • ❌ Pie plot

Explanation:
Seaborn offers specialized high-level plots such as regression and categorical visuals.


10. Question 10

Charts representing categorical data as square tiles:

  • ✅ Waffle charts

  • ❌ Line charts

  • ❌ Bar charts

  • ❌ Pie charts

Explanation:
Waffle charts display categories as grids of squares.


🧾 SUMMARY TABLE

Q Answer Key Concept
1 True Seaborn–Matplotlib relationship
2 Open Street Map Folium default tiles
3 zoom_start= Zoom setting
4 Location Map center
5 Markers Map points
6 Thematic Choropleth definition
7 Python Folium type
8 True GeoJSON requirement
9 Regression plot, Categorical plot Seaborn specialized plots
10 Waffle charts Categorical tile visualization