You don’t think there could be some kind of selection bias built in? That maybe the kind of people that go through the effort to install an extension like that may tend to vote a certain way on certain videos? What makes you think that the sample would be representative of the collective whole of YouTube users in any way whatsoever?
You don’t think there could be some kind of selection bias built in? That maybe the kind of people that go through the effort to install an extension like that may tend to vote a certain way on certain videos? What makes you think that the sample would be representative of the collective whole of YouTube users in any way whatsoever?