Bаnk Of Americа cоllected а dataset tо predict credit card fraud. The raw dataset cоntains the following issues: TransactionAmount (numerical) : extreme outliers (e.g., $0.01 and $1,000,000). TransactionTime (numerical): hours of the day (0–23), with some missing values. MerchantCategory (categorical): over 200 unique categories, some rare categories with only 1–2 transactions. CardType (categorical) : 'Visa', 'MasterCard', 'Amex', some missing entries. IsInternational (boolean): True/False, some missing entries. There are duplicate rows and some inconsistent entries (like negative TransactionAmount, invalid TransactionTime). a) Suggest a method to handle the outliers in TransactionAmount while minimizing the impact of extreme outliers.b) Propose a strategy for missing values in TransactionTime and CardType.c) How would you handle MerchantCategory rare categories?d) How should IsInternational be preprocessed for machine learning?e) Suggest one feature engineering idea to help the model detect fraud.f) Identify one potential problem if scaling is not applied to numerical variables before using models like KNN.
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