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Data Mining Methods Basics Q&A

Which of the following is not applicable to Data Mining?
Involves working with known information — Correct

The process of extracting valid, useful, unknown info from data and using it to make proactive knowledge driven business is called
Data mining — Correct


What is the other name for Data Preparation stage of Knowledge Discovery Process?
ETL — Correct

Which of the following role is responsible for performing validation on analysis datasets?
Statisticians — Correct

Which of the following activities is performed as part of data pre processing?
Detect Missing Values — Correct

Which of the following modelling type should be used for Labelled data?
Predictive Modelling — Correct

Noisy values are the values that are valid for the dataset, but are incorrectly recorded
True — Correct


Which statistical technique deals with finding a structure in a collection of unlabeled data?
Clustering — Correct

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

What is the type of learning where a function is inferred to describe hidden structure from unlabeled data
Unsupervised Learning — Correct

Statistical technique used for investigating and modelling the relationship between two or more variables is:
Regression analysis — Correct

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


Machine learning task of inferring a function from labelled training data is known as
Supervised Learning — Correct

Which is the statistical technique used for investigating and modelling the relationship between two or more variables?
Regression analysis — Correct

Regression is typically carried out to develop a mathematical model of the process
True — Correct

Associate rule is known as _
Affinity analysis — Correct

Which data mining method groups together objects that are similar to each other and dissimilar to the other objects?
Clustering — Correct

Which of the following activities are performed as part of data pre processing?
All the options — Correct

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

_ are the values that mark the boundaries of the confidence interval.
Confidence limits — Correct

The process of extracting valid, useful, unknown info from data to make proactive knowledge driven business is called
Data mining — Correct

Simulations are carried out to develop a mathematical model of the process
False — Correct

2 Comments

  1. Nayan MamaniaNayan Mamania
    Nayan Mamania

    Which of the following are Multi-class Classification problem
    Should we gift a book or a Gift card..is wrong answer

    28 October 2020 at 9:10 am Reply
  2. senthilkumarsenthilkumar
    senthilkumar

    Which of the following are Multi-class Classification problem
    Movie,documentary, thriller Is right anwser

    18 December 2020 at 2:12 pm Reply

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