Class 12 Computer Science · Chapter 6 · Test 1
Data Science and Data
36 MCQs
36 questions · 30 min · 36 marks
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Sample questions
The first 5 of 36. Try each one, then tap to see the answer.
Question 1
Data science is mainly concerned with:
- ADesigning hardware
- BExtracting useful information from data
- CWriting only code
- DCreating websites
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Answer: B
Data science focuses on collecting and analysing data to find useful information.
Question 2
Data organised in rows and columns is called:
- AUnstructured data
- BStructured data
- CRaw data
- DRandom data
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Answer: B
Structured data is arranged in rows and columns such as tables and spreadsheets.
Question 3
An example of unstructured data is:
- ATables
- BSpreadsheets
- CImages and videos
- DDatabases
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Answer: C
Images and videos do not follow a fixed format.
Question 4
Data science turns raw data into:
- AFaster processors
- BLarger storage
- CCompiled code
- DMeaningful knowledge
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Answer: D
Data science converts raw data into meaningful knowledge.
Question 5
Using facts and data helps data science reduce:
- AGuesswork in decision-making
- BThe number of programmers
- CThe size of databases
- DThe cost of internet
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Answer: A
Data science answers questions using facts and so reduces guesswork.
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