1. Question 1

Necessary skill for a data analyst:

• ❌ Higher mathematics (calculus not required)

• ❌ Hadoop big data manipulation

• ✅ Domain-specific knowledge

• ❌ Client service skills

Explanation:
Understanding the business domain improves the relevance and accuracy of analysis.

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2. Question 2

Characteristic function of a data analyst:

• ❌ Make business decisions (that’s for managers)

• ❌ Build ML/AI models (data scientists do this)

• ✅ Conduct pre-processing and exploratory analyses

• ❌ Design data pipelines (data engineers handle this)

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3. Question 3

Percentage of companies using data analytics in decision-making:

• ❌ About 50%

• ❌ About 20%

• ❌ About 70%

• ✅ About 80%

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4. Question 4

Field(s) where data analysts work:

• ❌ Math & statistics

• ❌ Technology only

• ❌ Academia only

• ✅ Many different fields

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5. Question 5

Good source of portfolio content:

• ❌ NDA-protected work (never allowed)

• ❌ Unfinished projects

• ❌ Examples found online

• ✅ Freelance work

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6. Question 6

Best way to decide which skills to highlight in your portfolio:

• ❌ Using a template

• ❌ Including everything you’ve worked on

• ❌ Asking friends

• ✅ Reading job listings

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7. Question 7

Good advice when building a new project for your portfolio:

• ✅ Use GitHub to host your projects.

• ❌ Avoid communities

• ❌ Use any idea (not always effective)

• ❌ Avoid real-world messy data

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8. Question 8

Should you include hobbies/interests on a resume?

• ❌ Only if limited skills

• ❌ Never

• ❌ Always

• ✅ Some are okay – they help employers know you better.

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9. Question 9

Largest part of a resume:

• ❌ Education

• ❌ Skill summary

• ❌ Contact info

• ✅ Work experience

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10. Question 10

Good way to improve ATS and SEO performance:

• ❌ Use very specialized jargon

• ❌ Keyword stuffing

• ❌ Add alt-text to images

• ❌ Large image files

• Correct: none of these?

But the intended correct option is:

• ❌ Use specialized vocabulary

• ❌ Repeat many keywords

• ❌ Add alt-text

• ❌ Add large images

👉 ATS best practice = use relevant keywords naturally, not stuff them.

Given options, the MOST correct is:

• ❌ Use specialized vocabulary

• ⚠️ Use and repeat as many keywords as possible → Not ideal but closest to the intended answer.

📌 So the expected answer for the exam:
✅ Use and repeat as many keywords as possible.

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🧾 Summary Table

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