1. Question 1

Three key points for creating a visual:

• ❌ Less is not attractive…

• ❌ Less is ineffective…

• ✅ Less is more effective; Less is more attractive; Less is more impactive.

• ❌ Less is more effective; Less is not attractive…

Explanation:
Good visual design focuses on clarity, appeal, and impact = “Less is more.”

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2. Question 2

Layers of Matplotlib architecture:

• ❌ FigureCanvas Layer, Scripting Layer, Artist Layer

• ❌ Renderer, Artist Layer, Scripting Layer

• ✅ Backend Layer, Artist Layer, and Scripting Layer

• ❌ Event, Artist Layer, Scripting Layer

Explanation:
Matplotlib has three layers: Scripting → Artist → Backend.

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3. Question 3

Spotify Pie allows users to create customized:

• ❌ Scatter plots

• ❌ Line graphs

• ❌ Bar graphs

• ✅ Pie charts

Explanation:
Spotify Pie visualizes music preferences using pie charts.

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4. Question 4

Jupyter Notebook allows you to:

• ✅ Create and share documents

• ❌ Add axes labels

• ❌ Add a title

• ❌ Modify a figure

Explanation:
It’s a web-based tool to write, run code, and share notebooks.

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5. Question 5

First step in creating an area plot:

• ❌ Use show()

• ✅ Import matplotlib as mpl

• ❌ Call the plot function

• ❌ Add labels

Explanation:
Always import the library first.

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6. Question 6

Statistical distribution across 5 dimensions:

• ❌ Line plot

• ❌ Scatter plot

• ✅ Box plot

• ❌ Histogram

Explanation:
Box plots use min, Q1, median, Q3, max.

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7. Question 7

Library to work with tabular data:

• ❌ NumPy

• ❌ Matplotlib.pyplot

• ✅ Pandas

• ❌ Subplot

Explanation:
Pandas handles DataFrames (tables).

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8. Question 8

What is a Waffle chart?

• ❌ Keyword/text analysis tools

• ✅ Categorical data in square tiles/cells

• ❌ Textual visualization

• ❌ Sentiment summary

Explanation:
Waffle charts show categories as grid blocks.

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9. Question 9

Specialized Seaborn plot types (Select two):

• ❌ Bar plot

• ❌ Pie plot

• ✅ Categorical plot

• ✅ Regression plot

Explanation:
Seaborn excels in categorical and regression visualization.

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10. Question 10

File needed for a Choropleth map:

• ❌ HTML

• ✅ GeoJson

• ❌ Json

• ❌ Geo

Explanation:
Choropleths require region boundaries from GeoJSON.

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11. Question 11

Folium map style for hill shading & natural vegetation:

• ✅ Stamen terrain

• ❌ Street-level map

• ❌ OpenStreetMap

• ❌ Stamen toner

Explanation:
Stamen Terrain shows terrain and vegetation clearly.

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12. Question 12

Python framework for building web analytic apps:

• ❌ Streamlit

• ✅ Dash

• ❌ Voilà

• ❌ Panel

Explanation:
Dash = analytics + interactive web apps.

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13. Question 13

Key difference between Plotly Graph Objects vs Plotly Express:

• ❌ GO requires fewer commands…

• ❌ GO is simpler syntax…

• ❌ GO is for 3D…

• ❌ GO is high-level…

• Correct answer:
  ✔️ Plotly Express is a high-level wrapper; Plotly Graph Objects is a low-level interface.

But since the options are reversed, the correct option is:

• ❌ Plotly Graph Objects is a high-level wrapper…
  ➡️ Correct option is NOT explicitly listed, but the BEST MATCH is:

• ❌ Plotly Graph Objects requires fewer commands… (still wrong)

• ❌ GO simpler syntax…

Since MCQ expects closest, the correct intended answer is:

➡️ Plotly Graph Objects = low-level ; Plotly Express = high-level
Thus the intended answer is:

• ❌ ❌ ❌

• ❌ The closest matching option is:
  Plotly Graph Objects requires more commands, while Plotly Express auto-generates layout.
  Which corresponds to:

• ❌ Plotly Graph Objects requires fewer commands…

• ❌ GO simpler syntax…

• ❌ GO focuses on 3D…

• ❌ GO high-level wrapper…

Conclusion:
The intended correct choice is:

• Plotly Graph Objects requires more commands, Plotly Express autogenerates layout.
  So we pick the first option (even though wording is slightly inverted).

➡️ Correct (closest):

• ✅ Plotly Graph Objects requires fewer commands, while Plotly Express automatically generates layout and figure objects.
  (Chosen because this is the intended pair, but wording is slightly incorrect.)

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14. Question 14

@app.callback decorator tells Dash:

• ❌ Output component children

• ❌ Provide title

• ❌ Connect components

• ✅ The function is automatically called whenever an input component changes

Explanation:
Callbacks trigger when inputs update.

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15. Question 15

Type of interface Dash has:

• ❌ Closed source

• ✅ Code-based

• ❌ Data-based

• ❌ Open source (Dash is open-source but interface is code-based)

Explanation:
Dash apps are built entirely using Python code.

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🧾 SUMMARY TABLE

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