Course Project
Barbara MAstrandrea
25/08/2017
First Slide
Overview
This was built as part of a deliverable for the course Developing Data Products as part of the Coursera Data Science Specialization.
The Shiny App developed for the first part of the assignment demo is avalilable at: https://bmastrandrea.shinyapps.io/Shiny_app_USArrests/
Source code for ui.R and server.R files are available on the GitHub repo: https://github.com/bmastrandrea/Developing-Data-Products
Slide With Description
Web Application functionality
The application provides the rate of violent crimes registered in the US in 1973. A drop down menu lets you select the type of crime (Murder, Assault, UrbanPop, Rape).
names(USArrests)
[1] "Murder" "Assault" "UrbanPop" "Rape"
The chart on the right changes according to the selected one by showing the crime rate (per 100,000) for each state.
Slide With Code
Below a sample of the dataset
head(USArrests)
Murder Assault UrbanPop Rape
Alabama 13.2 236 58 21.2
Alaska 10.0 263 48 44.5
Arizona 8.1 294 80 31.0
Arkansas 8.8 190 50 19.5
California 9.0 276 91 40.6
Colorado 7.9 204 78 38.7
and its summary
summary(USArrests)
Murder Assault UrbanPop Rape
Min. : 0.800 Min. : 45.0 Min. :32.00 Min. : 7.30
1st Qu.: 4.075 1st Qu.:109.0 1st Qu.:54.50 1st Qu.:15.07
Median : 7.250 Median :159.0 Median :66.00 Median :20.10
Mean : 7.788 Mean :170.8 Mean :65.54 Mean :21.23
3rd Qu.:11.250 3rd Qu.:249.0 3rd Qu.:77.75 3rd Qu.:26.18
Max. :17.400 Max. :337.0 Max. :91.00 Max. :46.00
Slide With Plot
Multiple histograms that show the rate for each crime
