Data Mining Methods Basics MCQs Solution | TCS Fresco Play
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1. Which of the following is not applicable to Data Mining?
Involves working with known information -- Correct
2. The process of extracting valid, useful, unknown info from data and using it to make proactive knowledge driven business is called
Data mining -- Correct
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3. What is the other name for Data Preparation stage of Knowledge Discovery Process?
ETL -- Correct
4. Which of the following role is responsible for performing validation on analysis datasets?
Statisticians -- Correct
5. Which of the following activities is performed as part of data pre processing?
Detect Missing Values -- Correct
6. Which of the following modelling type should be used for Labelled data?
Predictive Modelling -- Correct
7. Noisy values are the values that are valid for the dataset, but are incorrectly recorded
True -- Correct
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8. Which statistical technique deals with finding a structure in a collection of unlabeled data?
Clustering -- Correct
9. Probability of theft in an area is 0.03 with expected loss of 20% or 30% of things with probabilities 0.55 and 0.45. Insurance policy from A costs $150 pa with 100% repayment. Policy with B, costs $100 pa and first $500 of any loss has to be paid by the owner. Which data mining technique can be used to choose the policy?
Decision Tree -- Correct
10. What is the type of learning where a function is inferred to describe hidden structure from unlabeled data
Unsupervised Learning -- Correct
11. Statistical technique used for investigating and modelling the relationship between two or more variables is:
Regression analysis -- Correct
12. If time is used as an independent variable in a simple linear regression analysis, which of the following assumptions could be violated?
Successive observations of the dependent variable are uncorrelated -- Correct
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13. Machine learning task of inferring a function from labelled training data is known as
Supervised Learning -- Correct
14. Which is the statistical technique used for investigating and modelling the relationship between two or more variables?
Regression analysis -- Correct
15. Regression is typically carried out to develop a mathematical model of the process
True -- Correct
16. Associate rule is known as _____________
Affinity analysis -- Correct
17. Which data mining method groups together objects that are similar to each other and dissimilar to the other objects?
Clustering -- Correct
18. Which of the following activities are performed as part of data pre processing?
All the options -- Correct
19. Which of the following are Multi-class Classification problem?
Should we gift a book or a Gift card? , Will it be a Rainy day or Sunny day tomorrow? -- Wrong
20. _________ are the values that mark the boundaries of the confidence interval.
Confidence limits -- Correct
21. The process of extracting valid, useful, unknown info from data to make proactive knowledge driven business is called
Data mining -- Correct
22. Simulations are carried out to develop a mathematical model of the process
False -- Correct
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