Use the Behavioral Risk Factor Surveillance System (BRFSS) dataset (http://www.cdc.gov/brfss/). Describe how the observations in the sample are collected, and the implications of this data collection method on the scope of inference (generalizability / causality). Come up with at least three research questions that you want to answer using these data. Perform exploratory data analysis (EDA) that addresses each of the three research questions you outlined above.

Assignment for Coursera JHU Reproducible Research Week 4 Public Health and Economic problems caused by server weather events in US