Quiz -1

 Multiple-Choice Questions (MCQs)

1. **What is the primary purpose of data analytics?**

   - A) Data storage

   - B) Data visualization

   - C) Decision-making

   - D) Data collection

2. **Which type of data is organized in a fixed format and easily searchable?**

   - A) Unstructured data

   - B) Semi-structured data

   - C) Structured data

   - D) Raw data

3. **Which of the following is an example of unstructured data?**

   - A) A SQL database

   - B) A JSON file

   - C) An email

   - D) A spreadsheet

4. **Descriptive analytics is primarily used to:**

   - A) Predict future outcomes

   - B) Analyze historical data

   - C) Provide recommendations

   - D) Diagnose problems

5. **What type of data does a JSON file represent?**

   - A) Structured data

   - B) Unstructured data

   - C) Semi-structured data

   - D) Raw data

6. **Which of the following is NOT a characteristic of structured data?**

   - A) Fixed schema

   - B) Easily searchable

   - C) Lacks organization

   - D) Tabular format

7. **Predictive analytics is used to:**

   - A) Summarize past data

   - B) Identify patterns in data

   - C) Forecast future events

   - D) Diagnose issues

8. **What is an example of qualitative data?**

   - A) Temperature readings

   - B) Survey responses on satisfaction

   - C) Sales figures

   - D) Number of employees

9. **Which type of data analysis provides recommendations on actions to take?**

   - A) Descriptive

   - B) Diagnostic

   - C) Predictive

   - D) Prescriptive

10. **Which of the following is an example of structured data?**

    - A) A customer review

    - B) A Word document

    - C) An Excel spreadsheet

    - D) A video file

11. **What does 'data veracity' refer to?**

    - A) The amount of data

    - B) The accuracy and reliability of data

    - C) The speed of data processing

    - D) The variety of data formats

12. **Which of the following best describes semi-structured data?**

    - A) Fully organized in tables

    - B) Lacks any identifiable structure

    - C) Contains identifiable tags but not in a strict format

    - D) Raw data with no formatting

13. **Which analytics technique would be most useful for identifying customer sentiment from social media posts?**

    - A) Descriptive analytics

    - B) Predictive analytics

    - C) Text analytics

    - D) Prescriptive analytics

14. **Which data type is typically collected from surveys and interviews?**

    - A) Quantitative data

    - B) Qualitative data

    - C) Structured data

    - D) Big data

15. **What is the primary challenge of analyzing unstructured data?**

    - A) Data volume

    - B) Lack of predefined format

    - C) Data storage

    - D) Data collection methods

16. **Which of the following is an example of continuous quantitative data?**

    - A) Number of students in a class

    - B) Height of individuals

    - C) Categories of products

    - D) Names of employees

17. **In a relational database, data is typically organized into:**

    - A) Files

    - B) Objects

    - C) Tables

    - D) Documents

18. **Which of the following best describes big data?**

    - A) Data with high accuracy

    - B) Large volumes of structured data only

    - C) Vast amounts of diverse data generated at high velocity

    - D) Small datasets analyzed for trends

19. **What kind of data can be analyzed using machine learning techniques?**

    - A) Only structured data

    - B) Only unstructured data

    - C) Both structured and unstructured data

    - D) Only numerical data

20. **Which analysis technique helps in determining why a specific event occurred?**

    - A) Descriptive analysis

    - B) Diagnostic analysis

    - C) Predictive analysis

    - D) Prescriptive analysis

21. **Which tool is commonly used for data visualization?**

    - A) SQL

    - B) R

    - C) Tableau

    - D) Excel

22. **Which of the following is NOT a source of secondary data?**

    - A) Academic journals

    - B) Government reports

    - C) Online surveys

    - D) Market research reports

23. **What type of data is typically analyzed using sentiment analysis?**

    - A) Structured data

    - B) Semi-structured data

    - C) Unstructured data

    - D) Quantitative data

24. **What is a key benefit of using prescriptive analytics?**

    - A) It summarizes past events.

    - B) It predicts future trends.

    - C) It provides actionable recommendations.

    - D) It identifies correlations between variables.

25. **In which scenario would you use diagnostic analytics?**

    - A) To predict next quarter's sales

    - B) To understand the cause of declining customer satisfaction

    - C) To summarize annual performance data

    - D) To recommend new marketing strategies

---

### Answers

1. C) Decision-making

2. C) Structured data

3. C) An email

4. B) Analyze historical data

5. C) Semi-structured data

6. C) Lacks organization

7. C) Forecast future events

8. B) Survey responses on satisfaction

9. D) Prescriptive

10. C) An Excel spreadsheet

11. B) The accuracy and reliability of data

12. C) Contains identifiable tags but not in a strict format

13. C) Text analytics

14. B) Qualitative data

15. B) Lack of predefined format

16. B) Height of individuals

17. C) Tables

18. C) Vast amounts of diverse data generated at high velocity

19. C) Both structured and unstructured data

20. B) Diagnostic analysis

21. C) Tableau

22. C) Online surveys

23. C) Unstructured data

24. C) It provides actionable recommendations.

25. B) To understand the cause of declining customer satisfaction