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Unit 4: Data and Analysis

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Question 1 of 20 0% read

1. The process of inspecting, cleaning, transforming, and modeling data to discover useful information is called:

A Data Entry
B Data Storage
C Data Analysis
D Data Deletion

2. Which of the following is NOT a data type?

A Qualitative
B Quantitative
C Logical
D Structured

3. Omar is comparing two data sources to check consistency. This is part of?

A Data collection
B Data validation
C Data visualization
D Data storage

4. The term 'Big Data' refers to data sets that are:

A Too large and complex for traditional data-processing application software
B Only used by large companies
C Stored in a single computer
D Always accurate and clean

5. Salem is working with a dataset that has both structured and unstructured data. This is called?

A Multi-source data
B Hybrid data
C Semi-structured data
D Complex data

6. Nora is analyzing exam scores stored as percentages. Which data type is this?

A Integer
B Float
C String
D Boolean

7. Hassan is working with a dataset that is too large for Excel to handle. This is an example of?

A Volume
B Velocity
C Variety
D Veracity

8. What does Velocity in Big Data describe?

A Size of data
B Speed of data generation
C Type of data
D Storage method

9. Omar is analyzing sales data and finds that some entries have missing values. What step of data analysis should he perform first?

A Data visualization
B Data cleaning
C Data interpretation
D Data collection

10. Sana is studying customer reviews to improve a product. The reviews are in text format. What type of data is she dealing with?

A Structured data
B Unstructured data
C Semi-structured data
D Numerical data

11. Nahla is checking if her data sources are trustworthy. Which Big Data characteristic is this?

A Volume
B Velocity
C Variety
D Veracity

12. What does Variety in Big Data refer to?

A Accuracy
B Different data types
C Speed
D Volume

13. Which of the following is the BEST example of structured data?

A An email message
B An employee record in a database table
C A photograph
D A tweet

14. Which data type is partly structured?

A Structured
B Unstructured
C Semi-structured
D Binary

15. Ayesha is analyzing weather data to predict rainfall. She notices that temperature and humidity are both stored as numbers. Based on her analysis, which data types are these?

A Integer and String
B Float and Integer
C Boolean and Float
D String and Boolean

16. Yasin is analyzing data from multiple sources like social media, databases, and files. This relates to?

A Volume
B Variety
C Velocity
D Veracity

17. Data that is organized in a fixed format, such as in rows and columns of a table, is known as:

A Unstructured data
B Semi-structured data
C Big Data
D Structured data

18. Data that is organized in a fixed format, typically in rows and columns like in a database table, is known as:

A Structured data
B Unstructured data
C Semi-structured data
D Raw data

19. Hala is converting text data into numbers for analysis. This process is called?

A Data encoding
B Data cleaning
C Data visualization
D Data collection

20. Which is a common source of Big Data?

A Typewriters
B Social media
C Handwritten notes
D Printed books

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