econometricsstuff.blogspot.com
Guy's Econometrics blog: March 2007
http://econometricsstuff.blogspot.com/2007_03_01_archive.html
Thursday, March 29, 2007. Many applied econometric models based on aggregate time series data make use of expenditure, income or GDP series. Consumption functions, demand functions or even production functions, for example. It is important to recognise the need to use series that have been expressed at constant prices (relating to a suitable base year) rather than at the current prices ruling in each individual year. That is the series should be in real. Rather than nominal terms. Another area where you ...
econometricsstuff.blogspot.com
Guy's Econometrics blog: March 2009
http://econometricsstuff.blogspot.com/2009_03_01_archive.html
Wednesday, March 25, 2009. Back in February 2007 I blogged about the history of Student's t-test under the heading Guinness is good for you! If you want to read a fuller (and more authoratative) piece on it you can do so in the Fall 2008 issue of the Journal of Economic Perspectives, in which there is an article by Stephen T Ziliak with the title Guinessometrics: The Economic Foundation of "Student's " t. Posted by Guy at 2:06 AM. Tuesday, March 24, 2009. Well I woke up this morning. And loaded up EViews.
econometricsstuff.blogspot.com
Guy's Econometrics blog: October 2009
http://econometricsstuff.blogspot.com/2009_10_01_archive.html
Thursday, October 22, 2009. If you want a distraction from actual econometric modelling then check out this YouTube video. From the Metrics Gang - Skit Party 2009. Posted by Guy at 2:15 AM. Portsmouth, United Kingdom. View my complete profile. Guy's Home Page at Portsmouth. The Home Page for Guy's Introduction to Econometrics unit at Portsmouth. Guy's Maths and Stats for Economists blog. Guy's Economics and the Internet blog. How to boil an egg - statistics to the rescue.
econometricsstuff.blogspot.com
Guy's Econometrics blog: March 2008
http://econometricsstuff.blogspot.com/2008_03_01_archive.html
Wednesday, March 26, 2008. Look at the stars. Modern econometrics software, such as PcGive (part of the Oxmetrics suite) helpfully adds asterisks (or stars) to test statistics to indicate statistical significance - one star for significance at the 5% level and two stars for significance at the 1% level. This can be helpful for quickly showing you whether or not a model fails a diagnostic test, for example whether or not the residuals appear to exhibit heteroskedasticity. The estimation sample is: 1 to 213.
econometricsstuff.blogspot.com
Guy's Econometrics blog: February 2008
http://econometricsstuff.blogspot.com/2008_02_01_archive.html
Thursday, February 21, 2008. Why so many formulae? Something that puzzles many students of statistics and econometrics is why there might be several different formulae available to calculate the same result. Then on page 115 he gives the formula for the F statistic (for testing the overall significance of a multiple regression model) as [(ESS/k-1)/(RSS/n-k)] where n is the number of sample observations and k is the number of parameters to be estimated in the model. Posted by Guy at 7:55 AM. The Home Page...
econometricsstuff.blogspot.com
Guy's Econometrics blog: September 2008
http://econometricsstuff.blogspot.com/2008_09_01_archive.html
Wednesday, September 10, 2008. Make sure that you press ALL the right buttons! Last Monday I was in Bristol at a meeting of all the Economics Network. Key contacts (representatives from each university economics department in the UK). The programme included a very good talk from Andy Ross, the Deputy Director of the UK Government Economic Service. GES) on the theme of "Employability of Economics Graduates". Or The Undercover Economist. Or maybe just browse through the blog that goes with the book).
econometricsstuff.blogspot.com
Guy's Econometrics blog: February 2009
http://econometricsstuff.blogspot.com/2009_02_01_archive.html
Thursday, February 05, 2009. A maths joke with an econometrics twist. This joke is my own version of a joke to be found in Professor Ian Stewart's excellent book Professor Stewart's Cabinet of Mathematical Curiosities. I follow the "folk tradition" of adapting songs and stories to fit local conditions and points of reference). How much of that do you think she understands? Look, I just need to answer a call of nature, but when I get back maybe we can put it to the test.". Fantastic" said the first mathem...
econometricsstuff.blogspot.com
Guy's Econometrics blog: February 2007
http://econometricsstuff.blogspot.com/2007_02_01_archive.html
Monday, February 26, 2007. Guinness is good for you! Students taking my course on Introductory Econometrics probably won’t recognise this slogan but it was to be found on all bottles of Guinness when I was a student first studying econometrics at the end of the nineteen-sixties. Actually there is a connection between Guinness and econometrics and an interesting story to go with it. As you may know the t-distribution is rather like the normal distribution in that it is symmetrical around its mean and with...
econometricsstuff.blogspot.com
Guy's Econometrics blog: June 2007
http://econometricsstuff.blogspot.com/2007_06_01_archive.html
Tuesday, June 26, 2007. Carry on regressing (econometrician's poem). Econometricians are not a Total Sum of Squares. They can be dynamic and follow the trend. If things are non-stationary they can make a difference. And they can get their Dickey-Fuller augmented at the end. They test, test and test again. Adopting Hendry's main refrain. From general to specific, t, F and chi-squared too. They must look for significance in everything they do. They can transform things. With a bit of Box and Cox. View my c...
