What is a primary advantage of a scatter plot over a bar chart?

It can show the relationship between two numeric variables.

It is easier to read for large datasets.

It is better for comparing categories.

It shows the distribution of a single variable.

A data analyst wants to create a plot showing the distribution of a continuous variable (e.g., house prices) and also overlay a kernel density estimate (KDE) to see the smooth shape of the distribution. They prefer to use Seaborn's high-level API. Which function is most appropriate?

sns.catplot(data, x='price', kind='box')

sns.displot(data, x='price', kind='hist', kde=True)

sns.relplot(data, x='price', y='price')

sns.lineplot(data, x='price', y='price')

Python InstitutePCAD - Certified Associate in Data Analytics with Python

Domain 5Objective 1

Data Visualization Techniques PCAD-31 Practice Questions (Page 7)

Part of the Data Communication and Visualization domain, which accounts for 10.4% of the PCAD-31 exam. Python Institute does not publish an official question count, but from its 60-minute exam (~25–40 total, ~3–3 in this domain), expect 2–2 from this objective — we provide 39 practice questions to prepare you well beyond it. (estimate)

39questions here

8free pages

12concepts

10.4%of the exam

Questions 31–35

31foundation · easy
Which Matplotlib function is used to set the y-axis to a logarithmic scale?
Select an answer first
32foundation · easy
Which plot type is specifically designed to show the density of points in a 2D space?
Select an answer first
33foundation · easy
What is a primary advantage of a scatter plot over a bar chart?
Select an answer first
34application · medium
A data analyst wants to create a plot showing the distribution of a continuous variable (e.g., house prices) and also overlay a kernel density estimate (KDE) to see the smooth shape of the distribution. They prefer to use Seaborn's high-level API. Which function is most appropriate?
Select an answer first
35foundation · easy
Which parameter of plt.savefig() controls the resolution of the saved image in dots per inch?
Select an answer first

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Data Visualization Techniques PCAD-31 Practice Questions (Page 7)

Questions 31–35

Which Matplotlib function is used to set the y-axis to a logarithmic scale?

Which plot type is specifically designed to show the density of points in a 2D space?

What is a primary advantage of a scatter plot over a bar chart?

A data analyst wants to create a plot showing the distribution of a continuous variable (e.g., house prices) and also overlay a kernel density estimate (KDE) to see the smooth shape of the distribution. They prefer to use Seaborn's high-level API. Which function is most appropriate?

Which parameter of plt.savefig() controls the resolution of the saved image in dots per inch?

Keep studying — Data Communication and Visualization