Data Cleansing Assignment

Each assignment must be of original discussion and analysis, not counting the title page, reference page, figures, tables, and appendixes. Each application assignment must be supported by at least 3 scholarly references, in APA format.

Note: Your assignment will be checked for originality via the Turnitin plagiarism tool. The tool is a starting point for instructors to check overall Academic Integrity and higher scores generally indicate a higher probability of Academic Misconduct. The higher the score the higher the probability that there are too high a percentage of quotations included in the narrative, and/or there are passages that have not been properly cited.

Question:

The file contains data imported into Excel from Microsofts Northwind database. There are worksheets for the companys customers, products, product categories, and transactions. Each transaction is for a product purchased by a customer, but if a customer purchases multiple products at the same time, there are several corresponding rows in the Transactions table, one for each product purchased. The ID columns allow you to look up names of customers, products, and product categories. However, some of the IDs in the Transactions sheet have purposely been corrupted. There can be three reasons. First, an ID in the Transactions sheet might not correspond to any customer, product, or product category. Second, because each order is by a single customer, a given OrderID should correspond to only one CustomerID. Third, a given product ID should always correspond to the same product category ID. Besides the corrupted IDs, there is one other potential type of error, concerning dates. Shipping dates can be blank (for orders that havent yet shipped), but they shouldnt be before the corresponding order dates. Find all corrupted IDs and shipping dates in the Transactions sheet. Highlight all bad data in yellow. You dont need to change them (because in most cases there is no way of knowing the correct values).