Data Mining and Data Warehouse MCQs with answers Page - 12

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Q. __________ is used to map a data item to a real valued prediction variable.

  • (A) regression.
  • (B) time series analysis.
  • (C) prediction.
  • (D) classification.

A

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Q. In ____________, the value of an attribute is examined as it varies over time.

  • (A) regression.
  • (B) time series analysis.
  • (C) sequence discovery.
  • (D) prediction.

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Q. In ________ the groups are not predefined.

  • (A) association rules.
  • (B) summarization.
  • (C) clustering.
  • (D) prediction.

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Q. Link Analysis is otherwise called as ___________.

  • (A) affinity analysis.
  • (B) association rules.
  • (C) both a & b.
  • (D) prediction.

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Q. _________ is a the input to KDD.

  • (A) data.
  • (B) information.
  • (C) query.
  • (D) process.

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Q. The output of KDD is __________.

  • (A) data.
  • (B) information.
  • (C) query.
  • (D) useful information.

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Q. The KDD process consists of ________ steps.

  • (A) three.
  • (B) four.
  • (C) five.
  • (D) six.

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Q. Treating incorrect or missing data is called as ___________.

  • (A) selection.
  • (B) preprocessing.
  • (C) transformation.
  • (D) interpretation.

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Q. Converting data from different sources into a common format for processing is called as ________.

  • (A) selection.
  • (B) preprocessing.
  • (C) transformation.
  • (D) interpretation.

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Q. Various visualization techniques are used in ___________ step of KDD.

  • (A) selection.
  • (B) transformaion.
  • (C) data mining.
  • (D) interpretation.

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