Question $9$

A data analyst is working for a hospital network that has just merged with another hospital system. Both systems have separate databases containing patient information, including demographics, diagnoses, and treatment history. The goal is to combine this patient data into a single, unified database to improve patient care coordination. What is the most important step to take before analyzing the combined patient data?

$1$ point

Data mapping to standardize, merge, and clean the data from both databases.

Design attractive visualizations for presenting the combined data.

Use VLOOKUP to merge the customer email addresses.

Develop targeted marketing campaigns for the new customer base