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Mapping Capabilities in R

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) From time-to-time creating a basic map of the United States or other parts of the world to...

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Using R to Compare Hurricane Sandy and Hurricane Irene

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) Having just lived through two back to back hurricanes (Irene in 2011 and Sandy in 2012) that passed...

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What Time Is It?

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) A common scenario that I run into is time and how to deal with it. I often will do a  variety of...

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Hurricane Sandy Land Wind Speed and Kriging

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) NJ Hurricane Sandy Landfall Data These data come from the National Climatic Data Center (NCDC)....

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Earthquakes Over the Past 7 Days

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) This is a brief example using the maps in R and to highlight a source of data.  This is real-time...

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Plotting Likert Scales

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) Graphs can provide an excellent way to emphasize a point and to quickly and efficiently show...

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Importing Data Into R from Different Sources

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) I have found that I get data from many different sources.  These sources range from simple .csv...

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Mean Value from Grouped Data

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) Occasionally, I will get requests from clients to calculate the mean. Most of the time it’s a...

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Estimating Pi

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) Recently I’ve been working on some jackknife and bootstrapping problems.  While working on those...

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True Significance of a T Statistic

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) The example is more of a statistical exercise that  shows the true significance and the density...

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Y2K38: Our Own Mayan Calendar…Again

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) It’s not quite the end of the world as we know it.  We made it through December 21, 2012 unscathed....

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Binomial Confidence Intervals

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) This stems from a couple of binomial distribution projects I have been working on recently.  It’s...

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Bootstrap Confidence Intervals

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) Here is an example of nonparametric bootstrapping.  It’s a powerful technique that is similar to...

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Distribution of T-Scores

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) Like most of my post these code snippets derive from various other projects.  In this example it...

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Simulating Random Multivariate Correlated Data (Continuous Variables)

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) This is a repost of an example that I posted last year but at the time I only had the PDF document...

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Simulating Random Multivariate Correlated Data (Categorical Variables)

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) This is a repost of the second part of an example that I posted last year but at the time I only...

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Significant P-Values and Overlapping Confidence Intervals

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) There are all sorts of problems with p-values and confidence intervals and I have no intention (or...

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Dirichlet Process, Infinite Mixture Models, and Clustering

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) The Dirichlet process provides a very interesting approach to understand group assignments and...

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Finding the Distribution Parameters

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) This is a brief description on one way to determine the distribution of given data. There are...

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Simulating the Gambler’s Ruin

(This article was first published on Statistical Research » R, and kindly contributed to R-bloggers) The gambler’s ruin problem is one where a player has a probability p of winning  and probability q...

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