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We'll publish them on our site once we've reviewed them. Continue shopping. Item s unavailable for purchase. Please review your cart. CSV Examples:. My initial thought was to calculate the correlation between the binary outcome of a win or loss and the number of running plays per game, but it seemed wrong to compare a classification value to a integral value. After much pondering, it made more sense to take the correlation between the win margin team score minus opponent score and the delta between the number of running plays and passing plays running plays minus passing plays in a game.
In R, reading in a CSV input file creates a matrix-like object called a dataframe to represent the data.
Simply Rails 2. Chang begins each chapter with a light hearted question, then proceeds to answer the question by applying a computer model using Ruby, followed by analysis using R. By the end of this chapter, although you might not be the One, you will certainly be able to fly on to the rest of the book. Active 5 months ago. The R Graph Catalog features lots of graph and other plot examples, easily searchable and each with downloadable code. I'm running Windows, if it matters.
Once I had the dataframe objects to my disposal, it was very easy to perform matrix operations to massage the data and calculate the correlation between the win margin and the delta of the running plays. Minnesota, the strong running and weak passing team, had a strong correlation. Detroit, the weak running and strong passing team, had a weaker correlation. San Francisco and New Orleans were somewhere in the the middle.
The results correctly matched intuition. The stronger the running game is compared to the passing game, the greater the running game utilization influence is on the final outcome. Views: Share Tweet Facebook.
If you're curious about how things work, this fun and intriguing guide will help you find real answers to everyday problems. By using fundamental math and doing. Editorial Reviews. Book Description. Discover the world around you through programming. About the Author. Sau Sheong Chang has been in software.
Join TechHui. Boris - There are actually many courses that teach R directly and indirectly on Coursera. That particular class looks interesting though. Fred - I missed out on that presentation Hopefully in my next blog I can do some predictive analysis that will require me to go beyond basic stats. I'm preparing for a fried brain :.