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Graded Quiz: Basic and Specialized Visualization Tools :Data Visualization with Python (Applied Data Science Specialization) Answers 2025

1. Question 1

A scatter plot displays values for two variables.

  • ✅ True

  • ❌ False

Explanation:
Scatter plots map x vs y to visualize relationships between two variables.

2. Question 2

Which Matplotlib module allows quick plotting?

  • ❌ Folium

  • ✅ Pyplot

  • ❌ Numpy

  • ❌ Plotly

Explanation:
matplotlib.pyplot is the main interface for fast plotting.

3. Question 3

A pie chart is a circular graphic divided into segments.

  • ❌ False

  • ✅ True

Explanation:
Pie charts show category proportions.

4. Question 4

A box plot has five key statistical measures.

  • ❌ False

  • ✅ True

Explanation:
Boxplots show min, Q1, median, Q3, max (+ outliers).

5. Question 5

Area plots are similar to:

  • ❌ Area

  • ❌ Bar

  • ❌ Box

  • ✅ Line

Explanation:
Area plots are essentially filled line plots.

6. Question 6

Letters in box plot represent:

  • ❌ Mean… (incorrect)

  • ✅ A = Median, B = Third Quartile, C = First Quartile, D = Inter Quartile Range, E = Minimum, and F = Outliers

  • ❌ Median + mean mix (incorrect)

  • ❌ Mean-based interpretation (incorrect)

Explanation:
A box plot highlights quartiles, IQR, whiskers, and outliers.

7. Question 7

Function + parameter for a boxplot?

  • ❌ plot with type

  • ❌ plot with kind=”boxplot”

  • ❌ boxplot with type=”plot”

  • ✅ Function = plot, Parameter = kind with value = “box”

Explanation:
Using pandas plotting:
df.plot(kind="box") generates a box plot.

8. Question 8

First step in creating a histogram?

  • ✅ Import matplotlib as mpl and its scripting interface as plt.

  • ❌ Other wrong combinations

Explanation:
Usually:

import matplotlib as mpl
import matplotlib.pyplot as plt

9. Question 9

Process of creating a scatter plot?

  • ❌ Importing Matplotlib to visualize large data

  • ❌ Importing datapoints alone

  • ❌ Importing dataset library

  • ✅ The process of creating a scatter plot involves importing Matplotlib to visualize a large set of data.

Explanation:
Scatter plots require Matplotlib for visualization.

10. Question 10

A bar chart is also known as a:

  • ✅ Bar graph

  • ❌ Bar plot

  • ❌ Pyplot

  • ❌ Histogram

Explanation:
“Bar graph” is the common alternate name.

🧾 SUMMARY TABLE

Q Correct Answer Key Concept
1 True Scatter plot basics
2 Pyplot Matplotlib interface
3 True Pie chart definition
4 True Box plot statistics
5 Line Area vs line plot
6 A=Median, B=Q3, C=Q1, D=IQR, E=Min, F=Outliers Box plot anatomy
7 plot(kind=”box”) Boxplot creation
8 Import Matplotlib & Pyplot Histogram setup
9 Import Matplotlib to visualize Scatter plot process
10 Bar graph Bar chart terminology