1420 search results for "regression"

Homicides in Mexico 2006-2009

January 27, 2011
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Homicides in Mexico 2006-2009

Just today the Mexican government released to the public the mortality database for 2009, and as you can see from the chart Mexico has suffered from a steep rise in homicides from 2008 onward and very likely reached the highest violence rate in recent history last year. Since the Mexican government also recently made...

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Homicides in Mexico 2006-2009

January 27, 2011
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Homicides in Mexico 2006-2009

Just today the Mexican government released to the public the mortality database for 2009, and as you can see from the chart Mexico has suffered from a steep rise in homicides from 2008 onward and very likely reached the highest violence rate in recent history last year. Since the Mexican government also recently made...

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Null Confusion

January 25, 2011
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Null Confusion

Talking a bit with my friend Jarrod about math stats and econometrics, we both came to the conclusion that the standard presentation for basic inference is lacking. In an intro or intermediate applied statistics course you learn about first and … Continue reading →

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Blackbox trading Strategy using Rapidminer and R

January 23, 2011
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Blackbox trading Strategy using Rapidminer and R

This my first post in 2011. this post has cost me a bit more than usual, but I hope it meets expectations. The aim of this tutorial is to generate an algorithm based on black box trading, with all the necessary elements for evaluation. That is a first post of several, in order to explore the problems, features of...

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Blackbox trading Strategy using Rapidminer and R

January 23, 2011
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Blackbox trading Strategy using Rapidminer and R

This my first post in 2011. this post has cost me a bit more than usual, but I hope it meets expectations. The aim of this tutorial is to generate an algorithm based on black box trading, with all the necessary elements for evaluation. That is a first post of several, in order to explore the problems, features of...

Read more »

The Art of Exploratory Data Analysis

The Art of Exploratory Data Analysis

This blog is about the art of exploratory data analysis, which is also the subject of my new book, Exploring Data in Engineering, the Sciences, and Medicine (http://www.oup.com/us/ExploringData).  This art is appropriate in situations where y...

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Hard drive occupation prediction with R – part 2

Hard drive occupation prediction with R – part 2

On the first article, we saw a quick-and-dirty method to predict disk space exhaustion when the usage pattern is rigorously linear. We did that by importing our data into R and making a linear regression.In this article we will see the problems wit...

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Hard drive occupation prediction with R – part 2 – Getting the probability distribution

Hard drive occupation prediction with R – part 2 – Getting the probability distribution

On the first article, we saw a quick-and-dirty method to predict disk space exhaustion when the usage pattern is rigorously linear. We did that by importing our data into R and making a linear regression.In this article we will see the problems with that method, and deploy a more robust solution. Besides robustness, we will also see how we can generate...

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Relationship Between SAT & College Retention

January 21, 2011
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Relationship Between SAT & College Retention

Here is a quick analysis of the relationship between SAT score and student retention. The data is from the Integrated Postsecondary Education Data System (IPEDS) and analyzed using R. This was a quick analysis and would be careful about making any strong conclusions. The source for running this analysis along with some additional graphics that

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sab-R-metrics: Beginning with Boxplots, Scatterplots, and Histograms

January 15, 2011
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sab-R-metrics: Beginning with Boxplots, Scatterplots, and Histograms

Today I decided to begin more with visualizations and less with basic statistical analysis for sabermetrics using R. I'm not really here to teach the ins and outs of regressions and statistical tests, so once I get there, I'm hoping that those who have read this already have a decent understanding of those subjects before implementing them. ...

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