Data Mining and Business Intelligence MCQs with answers Page - 15

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Q. The proportion of transaction supporting X in T is called_____________.

  • (A) Confidence
  • (B) Support
  • (C) Support count
  • (D) All of the above

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Q. The absolute number of transactions supporting X in T is called _______.

  • (A) Confidence
  • (B) Support
  • (C) Support count
  • (D) None of the above

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Q. The value that says that transactions in D that support X also support Y is called__________.

  • (A) Confidence
  • (B) Support
  • (C) Support count
  • (D) None of the above

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Q. If T consist of 500000 transactions, 20000 transaction contain bread, 30000 transaction contain jam, 10000 transaction contain both bread and jam. Then the support of bread and jam is_________.

  • (A) 2%
  • (B) 20%
  • (C) 3%
  • (D) 30%

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Q. 7 If T consist of 500000 transactions, 20000 transaction contain bread, 30000 transaction contain jam, 10000 transaction contain both bread and jam. Then the confidence of buying bread with jam is____________.

  • (A) 33.33%
  • (B) 66.66%
  • (C) 45%
  • (D) 50%

A

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Q. The left hand side of an association rule is called________.

  • (A) Consequent
  • (B) Onset
  • (C) Antecedent
  • (D) Precedent

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Q. The right hand side of an association rule is called__________.

  • (A) Consequent
  • (B) Onset
  • (C) Antecedent
  • (D) Precedent

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Q. Which of the following is not a desirable feature of any efficient algorithm?

  • (A) To reduce number of input operation
  • (B) To reduce number of output operations
  • (C) To be efficient in computing
  • (D) To have maximal code length

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Q. All set of items whose support is greater than the user-specified minimum support are called as_____________

  • (A) Border set
  • (B) Frequent set
  • (C) Maximal frequent set
  • (D) Lattice

A

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Q. If a set is a frequent set and no superset of this set is a frequent set, then it is called____________

  • (A) Maximal frequent set
  • (B) Border set
  • (C) Lattice
  • (D) Infrequent sets

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