Our situation is that we only dabble with Wordpress, however one of our Wordpress customers wishes to add Google Analytics to his site.
I'm assuming we can do this manually, relatively easily. And our instincts would be to go down that route. The customer is only small scale and won't need to do anything especially sophisticated, at least at this stage.
We want to keep this simple. Is it best to avoid a plugin?
Thanks for all the great answers- in the end we did use a plug-in. As promised by the experts who answered below it was super straightforward.