It can be strongly correlated, meaning there's a definite relationship between them, while still being not significant like 3.6 min over a week. Most things that you hear cause cancer are only ~ .1 % extra probability over a lifetime but still highly correlated.
Yeah? That's not what I'd read earlier today. What I'd read earlier today is that it amounts to an average of 3.60 minutes a week less than non-users. I have a hard time imagining that as a strong correlation. I'm not sure how that'd be seriously considered a correlation at all. 3.60 minutes over the course of an entire week is basically nothing.
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