Data Mining MCQs
11. Which of the following is correct application of data mining?
A. Market Analysis and Management
B. Corporate Analysis & Risk Management
C. Fraud Detection
D. All of the above
View Answer
Ans : D
Explanation: Data mining is highly useful in the following domains : Market Analysis and Management, Corporate Analysis & Risk Management, Fraud Detection
12. In Data Characterization, class under study is called as?
A. Study Class
B. Intial Class
C. Target Class
D. Final Class
View Answer
Ans : C
Explanation: Data Characterization : This refers to summarizing data of class under study. This class under study is called as Target Class.
13. A sequence of patterns that occur frequently is known as?
A. Frequent Item Set
B. Frequent Subsequence
C. Frequent Sub Structure
D. All of the above
View Answer
Ans : B
Explanation: Frequent Subsequence : A sequence of patterns that occur frequently such as purchasing a camera is followed by memory card.
14. __________ refers to the description and model regularities or trends for objects whose behavior changes over time.
A. Outlier Analysis
B. Evolution Analysis
C. Prediction
D. Classification
View Answer
Ans : B
Explanation: Evolution Analysis : Evolution analysis refers to the description and model regularities or trends for objects whose behavior changes over time.
15. Pattern evaluation issue comes under?
A. Mining Methodology and User Interaction Issues
B. Performance Issues
C. Diverse Data Types Issues
D. None of the above
View Answer
Ans : A
Explanation: Pattern evaluation : The patterns discovered should be interesting because either they represent common knowledge or lack novelty.
16. "Handling of relational and complex types of data" issue comes under?
A. Mining Methodology and User Interaction Issues
B. Performance Issues
C. Diverse Data Types Issues
D. None of the above
View Answer
Ans : C
Explanation: The database may contain complex data objects, multimedia data objects, spatial data, temporal data etc. It is not possible for one system to mine all these kind of data.
17. Which of the following is correct disadvantage of Query-Driven Approach in Data Warehousing?
A. The Query Driven Approach needs complex integration and filtering processes.
B. It is very inefficient and very expensive for frequent queries.
C. This approach is expensive for queries that require aggregations.
D. All of the above
View Answer
Ans : D
Explanation: All statement are disadvantage of Query-Driven Approach in Data Warehousing.
18. The first steps involved in the knowledge discovery is?
A. Data Integration
B. Data Selection
C. Data Transformation
D. Data Cleaning
View Answer
Ans : D
Explanation: The first steps involved in the knowledge discovery is Data Integration.
19. In which step of Knowledge Discovery, multiple data sources are combined?
A. Data Cleaning
B. Data Integration
C. Data Selection
D. Data Transformation
View Answer
Ans : B
Explanation: Data Integration : multiple data sources are combined.
20. DMQL stands for?
A. Data Mining Query Language
B. Dataset Mining Query Language
C. DBMiner Query Language
D. Data Marts Query Language
View Answer
Ans : A
Explanation: The Data Mining Query Language (DMQL) was proposed by Han, Fu, Wang, et al. for the DBMiner data mining system.
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