2184 search results for "time series"

It’s Amazing How Well Dumb Things [Get Marketed]

November 2, 2014
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It’s Amazing How Well Dumb Things [Get Marketed]

Recently, Harry Long posted not one but four new articles on Seeking Alpha called It’s Amazing How Well Dumb Things … Continue reading →

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My Commonly Done ggplot2 graphs

October 30, 2014
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My Commonly Done ggplot2 graphs

In my last post, I discussed how ggplot2 is not always the answer to the question “How should I plot this” and that base graphics were still very useful. Why Do I use ggplot2 then? The overall question still remains: why (do I) use ggplot2? ggplot2 vs lattice For one, ggplot2 replaced the lattice package

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Getting old in baseball

October 29, 2014
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Getting old in baseball

We look at how batting average changes with age The post Getting old in baseball appeared first on Decision Science News.

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Don’t Worry _Too_ Much About The 2014 Gallup Crime Poll

October 29, 2014
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Don’t Worry _Too_ Much About The 2014 Gallup Crime Poll

Gallup released the results of their annual “Crime” poll in their Social Poll series this week and spent much time highlighting the fact that “cyber” was at the top of the list. (There’s nary a visualization on the Gallup post or in the accompanying PDF, so keep that graphic handy or use the scraped/cleaned poll data and...

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analyze the social security administration’s national beneficiary survey (nbs) with r

October 28, 2014
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above and beyond its namesake roosevelt-era retirement safety net, the social security administration oversees two federal programs - social security disability insurance and supplemental security insurance.  currently covering more than ten milli...

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Sampling Importance Resampling (SIR) and social revolution.

October 22, 2014
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Sampling Importance Resampling (SIR) and social revolution.

Motivation The purpose of this gallery post is several fold: to demonstrate the use of the new and improved C++-level implementation of R’s sample() function (see here) to demonstrate the Gallery’s new support for images in contributed posts to demonstrate the usefulness of SIR for updating posterior beliefs given a sample from an arbitrary prior distribution Application: Foreign Threats and Social Revolution The...

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Sampling Importance Resampling (SIR) and social revolution.

October 22, 2014
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Sampling Importance Resampling (SIR) and social revolution.

Motivation The purpose of this gallery post is several fold: to demonstrate the use of the new and improved C++-level implementation of R’s sample() function (see here) to demonstrate the Gallery’s new support for images in contributed posts to demonstrate the usefulness of SIR for updating posterior beliefs given a sample from an arbitrary prior distribution Application: Foreign Threats and Social Revolution The...

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Statistics doesn’t have to be so hard: simulate!

October 17, 2014
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My second-favourite keynote from yesterday's Strata Hadoop World conference was this one, from Pinterest's John Rauser. To many people (especially in the Big Data world), Statistics is a series of complex equations, but a just a little intuition goes a long way to really understanding data. John illustrates this wonderfully using an example of data collected to determine whether...

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JJ Allaire, the useR! 2014 interview

October 15, 2014
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JJ Allaire has courageously bet, time and time again, on the cutting edge of technologies....

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The Generalized Lambda Distribution and GLDEX Package for Fitting Financial Return Data – Part 2

October 14, 2014
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The Generalized Lambda Distribution and GLDEX Package for Fitting Financial Return Data – Part 2

Part 2 of a series by Daniel Hanson, with contributions by Steve Su (author of the GLDEX package) Recap of Part 1 In our previous article, we introduced the four-parameter Generalized Lambda Distribution (GLD) and looked at fitting a 20-year set of returns from the Wilshire 5000 Index, comparing the results of two methods, namely the Method of Moments,...

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