These days I'm giving my classes in the Master Search Engine IDEC-UPFSo I have a lot of students asking questions about Google Adwords, SEO and Google Analytics.
One of the recurring questions is "why when I check the results of a campaign Adwords these do not match the data provided by Google Analytics me".
Well ... I'm not going to write an article on why reaching forth since Google already has done for me :-)
Here is a link that Google explains each of the parameters that differ in control Adwords campaigns about Google Analytics and why they differ.
I hope you find it useful.
A big hug.