Graded Quiz :Data Scientist Career Guide and Interview Preparation (IBM Data Analyst Professional Certificate) Answers 2025
1️⃣ Question 1 — Necessary skills for a data scientist
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❌ Client service skills
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✅ Statistics and probability
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❌ Higher mathematics such as calculus (helpful but not always required)
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❌ Domain-specific knowledge (important but not universally required)
Explanation:
Statistics & probability are core foundations every data scientist must know.
2️⃣ Question 2 — Characteristic function of data scientists
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❌ Extract & organize data (data engineering)
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❌ Make decisions (business stakeholders)
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✅ Build ML/DL models for business decisions
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❌ Gather raw data (data collection role)
3️⃣ Question 3 — Percentage of global companies using data analytics
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❌ 25%
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❌ 49%
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❌ 78%
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✅ 82%
4️⃣ Question 4 — Fields where data scientists work
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✅ Many different fields
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❌ Academia
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❌ Technology
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❌ Math & statistics
Explanation:
Data science is used across healthcare, finance, retail, transport, manufacturing, etc.
5️⃣ Question 5 — Good source of portfolio content
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❌ NDA-restricted work
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✅ Freelance work
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❌ Examples found online
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❌ Unfinished projects
6️⃣ Question 6 — How to decide skills for your portfolio
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❌ Asking friends
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✅ Reading job listings
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❌ Using a template
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❌ Including everything
7️⃣ Question 7 — Advice for building a new project
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❌ Use random ideas
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❌ Avoid messy real-world datasets
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❌ Avoid communities
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✅ Use GitHub to host your projects
8️⃣ Question 8 — Should hobbies/interests be included?
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❌ Never
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❌ Always
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❌ Only if limited experience
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✅ Some are okay to help employers know you better
9️⃣ Question 9 — Largest part of resume
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❌ Skill summary
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❌ Contact information
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❌ Education
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✅ Work experience
🔟 Question 10 — Making resume ATS-friendly
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❌ Use specialized jargon
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❌ Add alt-text
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❌ Add image files
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✅ Use and repeat relevant keywords
🧾 Summary Table
| Q | Correct Answer |
|---|---|
| 1 | Statistics & probability |
| 2 | Build ML/DL models |
| 3 | 82% |
| 4 | Many different fields |
| 5 | Freelance work |
| 6 | Reading job listings |
| 7 | Use GitHub |
| 8 | Some hobbies are okay |
| 9 | Work experience |
| 10 | Use/Repeat keywords |