What is confidence in Market basket analysis?

Question

Can you explain about confidence in the Market basket analysis?

Answer 1

In Market basket analysis, confidence represents the likelihood of buying both items A and B. Confidence is calculated as the number of transactions involving both A and B divided by the number of transactions involving only item A.

Confidence (A=>B) = (Number of transactions involving both A and B)/ (Number of transactions involving only A)

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You can watch this video on Market basket analysis to know more about confidence: