Shiny app and presentation required in week 4 assignment, Coursera JHU data products course

As required in Coursera, JHU, data products course week 4 assignment

Scatter plot with coordinates of largest world cities

Coursera Data Science, Inference course assignment

This analysis is aimed at answering two questions: what are the types of storms and other severe weather events with highest impact on public health in the US and what are the events with highest impact on US economy, based on 1950-2011 U.S. National Oceanic and Atmospheric Administration's (NOAA) data. The data is processed using R software and intends to follow the commonly accepted criteria for reproducible research. The plotting system ggplot2 has been used to create the figures. Tornadoes and floods, respectively, are the answers to the above questions. No operational recommendations are provided, but the results presented could help the subject matter experts determine the allocation of resources and the adoption of measures to mitigate the effects of severe weather events.