1909 search results for "time series"

The ins and outs of interacting with web APIs

April 14, 2014
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We've received a number of questions from our users about dealing with the finer details of data sources on the web. Whether you're reading data from local storage such as a csv file, a .Rdata store, or possibly a proprietary file format, you've most likely run into some issues in the past. Common problems include passing incorrect paths, files...

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Exploring US healthcare data

April 13, 2014
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A few days ago, the Centers for Medicare and Medicaid Services (CMS) released some unprecedented data on the US healthcare system. The data consists of 9 million rows showing how much each doctor in the US charged Medicare, for what, and how much Medicare paid out. It doesn't quite cover everything (for example, services with less than 11...

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Survey: Computing Your Own Post-Stratification Weights in R

April 13, 2014
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Social Science Goes R: Weighted Survey Data Survey Data: Computing Your Own Weights The second installment in my series on working with survey data in R explains how to compute your own post-stratification weights to use with survey data. For a more...

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Exploring US Healthcare data

April 13, 2014
By

A few days ago, the Centers for Medicare and Medicaid Services (CMS) released some unprecedented data on the US healthcare system. The data consists of 9 million rows showing how much each doctor in the US charged Medicare, for what, and how much Medicare paid out. It doesn't quite cover everything (for example, services with less than 11...

Read more »

Beeps and progress alerts to your phone

April 9, 2014
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Beeps and progress alerts to your phone

Recently I encountered an R package called pingr, made by Rasmus Bååth (the same guy who did MCMC in a web page, my visualization of 2013). You install it, you type ping(), and it goes ping. Nice. In fact there … Continue reading →

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Five Reasons to Teach Elementary Statistics With R: #2

April 8, 2014
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Five Reasons to Teach Elementary Statistics With R:  #2

Introduction Reason #2: RStudio’s manipulate Do It Yourself Next Time Introduction This is is second in a projected five-part series of posts aimed at colleagues who teach elementary statistics. If you teach with R but hesitate to spring such a powerful and...

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Five Reasons to Teach Elementary Statistics With R: #2

April 8, 2014
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Five Reasons to Teach Elementary Statistics With R:  #2

Introduction Reason #2: RStudio’s manipulate Do It Yourself Next Time Introduction This is is second in a projected five-part series of posts aimed at colleagues who teach elementary statistics. If you teach with R but hesitate to spring such a powerful and...

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Ensemble Packages in R

April 8, 2014
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Ensemble Packages in R

by Mike Bowles Mike Bowles is a machine learning expert and serial entrepreneur. This is the second post in what is envisioned as a four part series that began with Mike's Thumbnail History of Ensemble Models. One of the main reasons for using R is the vast array of high-quality statistical algorithms available in R. Ensemble methods provide a...

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Active or Passive?

April 7, 2014
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Active or Passive?

We all heard the story several times that active Managers are not worth the Management Fee they charge you or more nicely phrased Active Manager hardly add value.Let's assume our Active Manager is benchmarked against the DAX. We are investigating if a ...

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Stationarity of ARCH processes

April 6, 2014
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Stationarity of ARCH processes

In the context of AR(1) processes, we spent some time to explain what happens when  is close to 1. if  the process is stationary, if  the process is a random walk if  the process will explode Again, random walks are extremely interesting processes, with puzzling properties. For instance, as , and the process will cross the x-axis an infinite number...

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