Hello, folks its time to cover some important econometrics tests you can do in R.The Akaike information criterion is a measure of the relative goodness of fit of a statistical model. If you have 10 models and order them by AIC, the...

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Hello, folks its time to cover some important econometrics tests you can do in R.The Akaike information criterion is a measure of the relative goodness of fit of a statistical model. If you have 10 models and order them by AIC, the...

In post 6 we introduced some econometrics code that will help those working with time-series to gain asymptoticly efficient results. In this post we look at the different commands and libraries necessary for testing our assumptions and such. Testing our Assumptions and Meeting the Gauss-Markov TheoremIn this section we will seek to test and verify the assumptions of the simple linear...

Greg Campbell writes: I am a Canadian archaeologist (BSc in Chemistry) researching the past human use of European Atlantic shellfish. After two decades of practice I am finally getting a MA in archaeology at Reading. I am seeing if the habitat or size of harvested mussels (Mytilus edulis) can be reconstructed from measurements of the The post Using...

IT is now appropriate to lay out our two regression models in full for empirical estimation over our two separate time periods. The first estimation is from 4/1/71 to 7/1/97 and the second is from 4/1/01 to 4/1/11. The methodology employed in the estimation of these two models is a procedure using Generalized Least Squares with a Cochrane-Orcutt, style iterated...

As my finance term paper, I investigated an interesting question where I tried to identify macroeconomic variables that explain the returns on equities. Much of the debate has already taken place on this topic which has given rise to two competing theo...

The K-means algorithm is a method to automatically cluster similar data examples together. The intuition behind K-means is an iterative procedure that starts by guessing the initial centroids, and then refines this guess by repeatedly assigning examples to their closest centroids and then recomputing the centroids based on the assignments. Read more »

By Joseph Rickert Yesterday, the cosmic randomizer placed me next to a newly minter lawyer in a crowed Los Gatos coffee shop. In three minutes of conversation I learned that that the fellow was interested in corporate law, was about to take a job that would give him a seat in the great VC/start-up game and that he had...

The December 2011 issue of the R Journal is now available for download. Three times a year, the open-access journal of the R project publishes peer-reviewed articles on research and applications of R and R packages. As of the latest issue, all articles are published under a Creative Commons license, making them accessible for translation, academic and commercial uses...