Data Mining MCQ Questions And Answers

Data Mining MCQ Questions And Answers

21. The issues of “Scalability and efficiency of the data mining algorithms” come under:

  1. User Interaction and Mining Methodology Issues
  2. Diverse Data Types Issues
  3. Performance Issues
  4. All of the above

Answer : C
Explanation: The issues of “Scalability and efficiency of the data mining algorithms” come under: Performance Issues.

22. What is the full form of OLTP?

  1. Online transaction processing
  2. Online traffic processing
  3. Offline transaction processing
  4. None of the above

Answer : A
Explanation: OLTP stands for Online transaction processing. It involves the collection of the input information, processing the data, and updating the existing data and hence, option A is correct.

23. Data mining is

  1. Time variant non-volatile collection of data
  2. The stage of selecting the right data
  3. The actual discovery phase of a knowledge
  4. None of the above

Answer : C
Explanation: Data mining is the actual discovery phase of a knowledge.

24. Most frequently occurring number in a set of values is called the _______

  1. Mode
  2. Median
  3. Mean
  4. Range

Answer : A
Explanation: Most frequently occurring number in a set of values is called mode.

25. Which of the following is not a type of association rule?

  1. Positive rule
  2. Negative rule
  3. Sequential rule
  4. Inverse rule

Answer : D
Explanation: The three types of association rules are positive rule, negative rule, and sequential rule.

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26. In Data Characterization, class under study is called as?

  1. Target Class
  2. Final Class
  3. Intial Class
  4. Study Class

Answer : A
Explanation: Data Characterization : This refers to summarizing data of class under study. This class under study is called as Target Class. So, option A is correct.

27. What are the functions of Data Mining?

  1. Association and correctional analysis classification
  2. Cluster analysis and Evolution analysis
  3. Prediction and characterization
  4. All of the above

Answer : D
Explanation: In data mining, there are several functionalities used for performing the different types of tasks. The common functionalities used in data mining are cluster analysis, prediction, characterization, and evolution. Still, the association and correctional analysis classification are also one of the important functionalities of data mining. So, All of the above option is correct.

28. The classification of the Data Mining System consists of:

  1. Database Technology
  2. Information Science
  3. Machine Learning
  4. All of the above

Answer : D
Explanation: The classification of the Data Mining System consists of: Database Technology, Information Science, Machine Learning.

29. Which of the following process uses intelligent methods to extract data patterns?

  1. Data mining
  2. Data selection
  3. Text mining
  4. Warehousing

Answer : A
Explanation: Data mining is the process which uses intelligent methods to extract data patterns.

30. The _________ is the best measure as a general rule of central tendency because it is more precise.

  1. Range
  2. Median
  3. Mean
  4. Mode

Answer : C
Explanation: The mean is the best measure as a general rule of central tendency because it is more precise.

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