This repository contains my work for the course project for the Coursera course "Getting and Cleaning data", part of the Data Science specialization. What follows first are my notes on the original data.
The features (561 of them) are unlabeled and can be found in the x_test.txt. The activity labels are in the y_test.txt file. The test subjects are in the subject_test.txt file.
I created a script called run_analysis.R which will merge the test and training sets together. Prerequisites for this script:
The CodeBook.md file explains the transformations performed and the resulting data and variables.
The American Community Survey distributes downloadable data about United States communities. Download the 2006 microdata survey about housing for the state of Idaho using download.file () from here:
Load the Gross Domestic Product data for the 190 ranked countries in this data set:
In the data set from Question 2 what is a regular expression that would allow you to count the number of countries whose name begins with "United"? Assume that the variable with the country names in it is named countryNames. How many countries begin with United?
Load the Gross Domestic Product data for the 190 ranked countries in this data set:
You can use the quantmod ( http://www.quantmod.com/) package to get historical stock prices for publicly traded companies on the NASDAQ and NYSE. Use the following code to download data on Amazon's stock price and get the times the data was sampled.