Data 
The data used in this project contains two parts that are both obtained from NYC Open Data. One is a New York City map including each zipcode area and its population.  Second one is the data from New York City Restaurant Inspection Results released by Department of Health and Mental Hygiene. This dataset contains every sustained or not yet adjudicated violation citation from every full or special program inspection conducted up to three years prior to the most recent inspection for restaurants and college cafeterias in an active status. It has a total of 385K rows and features including:
NYC Restaurant Inspection Results
Zip Code Map
Methodology
1. Exploratory Analysis
To get an overall sense of restaurants in New York City and grading, the percentage of restaurants with different grade in each boroughs.