DATA 604 Homework #2

Generate 100 simulations of 30 samples each from a distribution (other than normal) of your choice. Graph the sampling distribution of means. Graph the sampling distribution of the minimum. Share your graphs and your R code. What did the simulation of the means demonstrate? What about the distribution of the minimum...?

ABSTRACT The purpose of this analysis is to determine if there is a relationship between homicide and unemployment in the US among the general population, and comparatively among its Black/African-American population. Using observational time-series data, collected between 1960-2015 for the general population, this analysis couldn't reject the null hypothesis at a 99%, 95% or 90% confidence level (p-value = .17). However, the null hypothesis could be rejected when measuring the linear relationship between Aggravated Assault and Homicide (p-value = .0001). In contrast, the data set for Black/African-American Violent Crime from 1980-2012 yielded results that allows the rejection of the null hypothesis that unemployment and homicide are not connected (p-value = .00). Also, within the same model the null hypothesis for aggravated assault's relationship to Black homicide was rejected (p-value = .00). An extended data set that included 2013-2015, yielded almost identical results.

Data Frames created from HTML, XML and JSON source files

An HTML table of my top three book titles

Data wrangling exercise to transform a wide data set, into a tidy format.

Manipulate Strings for desired output

Selected Attributes of Bridge locations and types