# 777 search results for "Register"

## Frequentist German Tank Problem

March 20, 2014
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The German Tank Problem: The Frequentist Way Many things are given a serial number and often that serial number, logically, starts at 1 and for each new unit is increased by 1. For example, German tanks in World War II had several parts with serial numbers. By collecting...

## Frequentist German Tank Problem

March 20, 2014
By

The German Tank Problem: The Frequentist Way Many things are given a serial number and often that serial number, logically, starts at 1 and for each new unit is increased by 1. For example, German tanks in World War II had several parts with serial numbers. By collecting...

## Why multiple imputation?

March 20, 2014
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Background In the forth coming week, I will be giving a presentation on the fundamentals of imputation to my colleagues. One of the most important idea I would like to present is multiple imputation. In my last post, I have...

## Stop using bivariate correlations for variable selection

March 19, 2014
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Stop using bivariate correlations for variable selection Something I've never understood is the widespread calculation and reporting of univariate and bivariate statistics in applied work, especially when it comes to model selection. Bivariate statistics are, at best, useless for multi-variate model selection and, at worst, harmful. Since nearly all...

## Stop using bivariate correlations for variable selection

March 19, 2014
By

Stop using bivariate correlations for variable selection Something I've never understood is the widespread calculation and reporting of univariate and bivariate statistics in applied work, especially when it comes to model selection. Bivariate statistics are, at best, useless for multi-variate model selection and, at worst, harmful. Since nearly all...

## Use Data Science to help CARE International in Atlanta, March 28

March 17, 2014
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CARE International is a humanitarian organization that is leading the charge to fight poverty around the world, with a focus on empowering women and girls. On March 28 in Atlanta, CARE is teaming up with Booz Allen Hamilton, Emory University's Rollins School of Public Health and Revolution Analytics to bring data scientists together to use R to explore some...

## How to use Bioconductor to find empirical evidence in support of π being a normal number

March 14, 2014
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Happy π day everybody! I wanted to write some simple code (included below) to the test parallelization capabilities of my  new cluster. So, in honor of  π day, I decided to check for evidence that π is a normal number. A … Continue reading →

## Bayesian Search Models

March 13, 2014
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Bayesian Search Theory The US had a pretty big problem on their hands in 1966. Two planes had hit each other during a in-flight refueling and crashed. Normally, this would be an unfortunate thing and terrible for the families of those involved in the crash but otherwise fairly limited...

## Confounding & collinearity

March 11, 2014
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(This article was first published on MATHEMATICS IN MEDICINE, and kindly contributed to R-bloggers) Confounding and collinearity Introduction In this blog article, I will discuss about the bias introduced in estimation of coefficient of a given explanatory variable due to the presence of confounding factors. After that, I will try to demonstrate about the effect of variable collinearity on...

## Lebanon shouldering Syria

March 10, 2014
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The crisis that is Syria has had an incredible regional affect geopolitically, economically, and has required a significant response in humanitarian aid.  As the mass evacuation has occurred, surrounding countries are found hosting thousands of pe...