Introduction to using R Studio to understand and analyze big data sets. Importance of collecting and cleaning data. Methodology to understanding big data sets. Understanding the process and visualization techniques to make meaningful interpretations.

1. JA Hartig
Hartig & Associates
 Mechanical Engineer
 Project & Program
Management
 MBA – IT Management
11/11/2015Jahartig.com
Technology
Business

2. Using Data
Get Data
Clean &
Organize
Analyze Visualize Interpret
Jahartig.com 11/11/2015

3. Choosing R
Pros
 Statistical package -> programming
language
 Cutting edge/community
 Easy reproduce
 Platform Independent & easy integration
other languages
 Open source
Cons
 Steep learning curve
 Documentation
 Memory management
 Open source
Jahartig.com 11/11/2015
Infographic: http://blog.datacamp.com/r-or-python-for-data-analysis/

4. RStudio - IDE
Jahartig.com 11/11/2015

5. Jahartig.com 11/11/2015

6. Understanding the Data
 List of components – names()
 Dimensions of object – dim()
 Structure of the data – str()
 Header + first 6 observations – head()
 Function on entire set – sapply()
 Summary – summary()
Jahartig.com 11/11/2015

7. Visualize for Correlations
Base Package
Must ‘Build up’ graphs
Jahartig.com 11/11/2015

8. Visualize for Correlations
Lattice Package
• Designed for looking at
multiple conditions
Mpg ~ weight
• Automatically creates
separation
Jahartig.com 11/11/2015

9. Visualize for Correlations
Lattice Package - Trellis
• Look combination of factors at
once
Jahartig.com 11/11/2015

10. Statistics: Interpret
Numbers and Trends can Mislead Statistics
 Correlation
 Causation
 Non-normal Distributions
 Confidence
 Prediction
Jahartig.com 11/11/2015

11. Resources
Help
 CRAN
 Rdocumentation.org
 Stack Overflow
 Data Camp
 Websites like R-Bloggers
Packages
 Graphing:
 Base, ggplot2, Lattice, Grid, Maps, rCharts
 Stats
 Graphics
 Rcpp (C++ integration) & rJava

12. Credits
 http://www.pwc.com
 Cartoon originally copyrighted by the authors; G. Renee Guzlas, artist
 http://www.r-bloggers.com/conditioning-and-grouping-with-lattice-graphics/
 http://www.tylervigen.com/spurious-correlations
 https://upload.wikimedia.org/wikipedia/commons/e/ea/Anderson's_Iris_data_set.png
 http://33.media.tumblr.com/tumblr_mbw3ije3mX1qz9xd9.png
 http://www.cynthiaodonnell.com/wp-content/uploads/2015/04/heatmap-300x261.png
11/11/2015Jahartig.com