I've talked a bit about spurious regressions a bit in some earlier posts (here and here). I was updating an example for my time-series course the other day, and I thought that some readers might find it useful.Let's begin by reviewing what is usually m...
The headline, "Don't Get Wrong Idea About Cholesterol", caught my attention in the 3 May, 2015 Times-Colonist newspaper here in Victoria, B.C.. In fact the article came from a syndicated column, published about a week earlier. No matter - it's always a...
I've blogged previously about specification testing in the context of Logit and Probit models. For instance, see here and here. Testing for homoskedasticity in these models is especially important, for reasons that are outlined in t...
This post is prompted by a question raised by Irfan, one of this blog's readers, in some email correspondence with me a while back.The question was to do with imposing inequality constraints on the parameter estimates when applying maximum likelihood e...
The team at EViews has put together a great set of videos that highlight some of the new features in EViews 9.You can find them here, and I strongly recommend them.© 2015, David E. Giles
Great news today - EViews 9 has now been released.You can read the earlier posts that I prepared while testing the Beta version of EV9 here, here, and here.Congratulations to the team at EViews on this latest development!© 2015, David E. Giles
One decision that we often have to make when modelling with time-series data is whether to use "seasonally adjusted" data, or the original (unadjusted) data. In some cases the decision is effectively made for us - only the seasonally adjusted data are ...
Once upon a time there was a rule of thumb that there were 20 sheep in New Zealand for every person living there. Yep, I kid you not. The old adage used to be "3 million people; 60 million sheep".I liked to think of this as another important "Great Rat...
When you get a chance to check out the "beta" release of EViews 9 (which current users can download from here), you'll find lots of new features.Many of these relate to the Eviews interface, data handling, and graphs and tables. And then (of course) th...
I just love Dick Startz's "byline" on the EViews 9 Beta Forum: "Non-normality and collinearity are NOT problems!"Why do I like it so much? Regarding "normality", see here, and here. As for "collinearity": see here, here, here, and &...
