Clean excel data in attached file named BUHI Customer Data. The U.S. demographics data will help you replace missing cells within the customer data. 

• Interpolate missing data using the estimated values from the U.S. demographics dataset based on the customers' zip codes
• Remove extreme outliers
• Correct incorrect value formats (e.g., age = “twelve” instead of 12)
• Remove impossible values (e.g., age = 203)
• Identify categories from granular data (e.g., determine the state to which a zip code belongs)
• Identify problem data with complex problems (e.g., the state is Montana, but the country is Canada; the purchase was $100, but the item is a new car; one column says the gender is female, but another says it is male)