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Graded Quiz : Visualizing Data using Spreadsheets :Data Visualization and Dashboards with Excel and Cognos (IBM Data Analyst Professional Certificate) Answers 2025

1. Question 1

What is a capability of line charts?

  • ❌ Compare similar, unrelated datasets

  • ❌ Compare the frequency of datasets

  • Compare different, but related datasets

  • ❌ Compare different, unrelated datasets

Explanation:
Line charts show trends over time between related data series.


2. Question 2

Each piece of a pie chart represents part of a whole. What must the total equal?

  • ❌ 50%

  • ❌ 75%

  • 100%

  • ❌ 99%

Explanation:
A pie chart represents percentages that always sum to 100%.


3. Question 3

According to the “Introduction to Charts” video, which chart is one of the most commonly used?

  • ❌ Scatter chart

  • Bar chart

  • ❌ Funnel chart

  • ❌ Bubble chart

Explanation:
Bar charts are universally used for comparing categories.


4. Question 4

In the “Expert Viewpoints” video, which two software programs were mentioned?

  • ❌ Db2 and SQL

  • ❌ Google and Bing

  • ❌ Google Docs and Word

  • PowerPoint and Excel

Explanation:
Experts mentioned using Excel for analysis and PowerPoint to highlight insights.


5. Question 5

Which chart shows the relative contribution of unit sales from Ford car models?

  • Pie chart

  • ❌ Bar chart

  • ❌ Funnel chart

  • ❌ Line chart

Explanation:
A pie chart shows how much each model contributes to the total.


6. Question 6

How does a pivot chart differ from a standard chart?

  • ❌ Contains data series/categories/axes (both do)

  • ❌ Cannot be line/pie/bar (it can)

  • ❌ Always arranged in columns/rows

  • A pivot chart uses data from a pivot table

Explanation:
Pivot charts dynamically reflect the structure of their pivot table source.


7. Question 7

Main difference between Area and Column charts?

  • ❌ Area chart makes sense of complicated data; column shows axes

  • ❌ Column uses data points, area uses vertical bars

  • ❌ Area uses horizontal bars, column uses rows

  • A column chart uses vertical bars, and an area chart uses data points (with filled areas)

Explanation:

  • Column chart: vertical bars

  • Area chart: line chart style with areas filled below the line


🧾 Summary Table

Q# Correct Answer Key Concept
1 Compare different but related datasets Line charts show trends
2 100% Pie charts = whole
3 Bar chart Most common
4 PowerPoint & Excel Tools used by experts
5 Pie chart Contribution to total
6 Uses pivot table data Pivot chart difference
7 Column = bars; Area = filled data points Chart type differences