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?
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❌ Compare similar, unrelated datasets
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❌ Compare the frequency of datasets
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✅ Compare different, but related datasets
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❌ 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?
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❌ 50%
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❌ 75%
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✅ 100%
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❌ 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?
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❌ Scatter chart
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✅ Bar chart
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❌ Funnel chart
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❌ 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?
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❌ Db2 and SQL
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❌ Google and Bing
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❌ Google Docs and Word
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✅ 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?
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✅ Pie chart
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❌ Bar chart
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❌ Funnel chart
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❌ 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?
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❌ Contains data series/categories/axes (both do)
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❌ Cannot be line/pie/bar (it can)
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❌ Always arranged in columns/rows
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✅ 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?
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❌ Area chart makes sense of complicated data; column shows axes
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❌ Column uses data points, area uses vertical bars
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❌ Area uses horizontal bars, column uses rows
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✅ A column chart uses vertical bars, and an area chart uses data points (with filled areas)
Explanation:
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Column chart: vertical bars
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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 |