Data Science Questions And Answers

11. Point out the correct statement.

A. Raw data is original source of data
B. Preprocessed data is original source of data
C. Raw data is the data obtained after processing steps
D. None of the above

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12. Which of the following is one of the key data science skills?

A. Statistics
B. Machine Learning
C. Data Visualization
D. All of the above

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13. Which of the following is a key characteristic of a hacker?

A. Afraid to say they don't know the answer
B. Willing to find answers on their own
C. Not Willing to find answers on their own
D. All of the above

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14. Raw data should be processed only one time.

A. True
B. False
C. Can be true or false
D. Can not say

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15. Which of the following is the common goal of statistical modelling?

A. Inference
B. Summarizing
C. Subsetting
D. None of the above

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16. Causal analysis is commonly applied to census data.

A. True
B. False
C. Can be true or false
D. Can not say

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17. Which of the following model is usually a gold standard for data analysis?

A. Inferential
B. Descriptive
C. Causal
D. All of the above

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18. Which of the following is a revision control system?

A. Git
B. Numpy
C. Scipy
D. Slidify

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19. Which of the following step is performed by data scientist after acquiring the data?

A. Data Cleaning
B. Data Integration
C. Data Replication
D. All of the above

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20. Which of the following focuses on the discovery of (previously) unknown properties on the data?

A. Data mining
B. BigData
C. Data wrangling
D. Machine Learning

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