Panel data split sample

[Jorgen]

Hey guys,

I'm a real Eviews-noob and am currently stuck with my panel data set. My dependent variable is R&D-intensity and my sample goes from 2005 to 2013. Now I want to test if my dependent variable has a significant difference in the period 2008-2010. I want this to be checked against the periods 2005-2007 and 2011-2013. I am trying everything but it's impossible (for me) to compare them. Is there anyone out here who can guide me?

Kind regards,
Jorgen

[EViews Gareth]

You'll have to provide more details on exactly what you're trying to do.

[Jorgen]

I'm trying to look if the financial crisis (2008-2010) had an impact on the R&D-intensity in companies. Therefore I thought I would check the mean of R&D-intensity in the periods 2005-2007, 2008-2010 and 2011-2013 and see if there's a significant difference between them.

[EViews Gareth]

Set the sample to be 2005 2007, open up the R&D series and click on View->Descriptive Statistics->Stats Table, and look at the mean.
Now set the sample to be 2008 2010 and do the same thing.