Consider a two-class case with classes fraudulent and nonfraudulent. A data mining routine has been applied to a transaction dataset and has classified 50 records as fraudulent (30 correctly so) and 950 as nonfraudulent (920 correctly so). Calculate the overall error rate: (er) and the overall accuracy (ac). Hints: construct the classification matrix before calculating them. Answer for er is __________ Answer for ar is __________

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Consider a two-class case with classes fraudulent and nonfraudulent. A data mining routine has been applied to a transaction dataset and has classified 50 records as fraudulent (30 correctly so) and 950 as nonfraudulent (920 correctly so). Calculate the overall error rate: (er) and the overall accuracy (ac). Hints: construct the classification matrix before calculating them.

  • Answer for er is __________
  • Answer for ar is __________
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Given:

50 records as fraudulent (30 correctly so)

and 950 as nonfraudulent (920 correctly so)

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