# 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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