Costco is known for lower prices for bulk items. After calculating the support and confidence values for {toilet paper} = {avocados}, there appears to be a strong association because a large percentage of customers purchase these items. However, to avoid assuming the strength of association, what option should be done to confirm the strength of the association?
A) Review the transactions for accuracy
B) Rerun the confidence
C) Calculate the lift ratio
D) If the support and confidence are strong then no need to run anything more

Question

Costco is known for lower prices for bulk items. After calculating the support and confidence values for {toilet paper} => {avocados}, there appears to be a strong association because a large percentage of customers purchase these items. However, to avoid assuming the strength of association, what option should be done to confirm the strength of the association?
A) Review the transactions for accuracy
B) Rerun the confidence
C) Calculate the lift ratio
D) If the support and confidence are strong then no need to run anything more

Quizplus · Accepted Answer

Calculating the lift ratio helps in confirming the strength of the association between two items by measuring how much more often the items occur together than would be expected if they were statistically independent.

Costco Is Known for Lower Prices for Bulk Items