Which Association Rule would you prefer

The correct answer is A. high support and medium confidence.

Support is the percentage of transactions in the dataset that contain both itemsets. Confidence is the percentage of transactions that contain the first itemset that also contain the second itemset.

A high support indicates that the itemset is common in the dataset. A high confidence indicates that the second itemset is likely to occur if the first itemset occurs.

Therefore, an association rule with high support and medium confidence is more likely to be useful than an association rule with low support and high confidence or low support and low confidence.

Here is a more detailed explanation of each option:

• Option A: high support and medium confidence. This is the best option because it indicates that the itemset is common in the dataset and that the second itemset is likely to occur if the first itemset occurs.
• Option B: high support and low confidence. This option is not as good as option A because it indicates that the itemset is common in the dataset, but the second itemset is not very likely to occur if the first itemset occurs.
• Option C: low support and high confidence. This option is not as good as option A or option B because it indicates that the itemset is not very common in the dataset, but the second itemset is very likely to occur if the first itemset occurs.
• Option D: low support and low confidence. This is the worst option because it indicates that the itemset is not very common in the dataset and the second itemset is not very likely to occur if the first itemset occurs.