I'm still not clear on why to even use phi. There's dozens of examples of chi squared on YouTube where they conclude that x does have an effect on y becuse of the tiny p value. Why don't they mention taking any more steps?
Can you or anyone else expand on this please? I do find this stuff hard to learn. How do I make a judgement then? Chi squared says one thing, phi says something else and now I'm bring told to just do a quick division and decide whether I think that's important or not?
Thanks for your replies I...
Thank you for replying. From what you are saying I shall ensure i use phi in addition to chi squared tests in future. Otherwise I could be fooled into thinking the groups are related to the categories (if I get a significant p value). So as phi is so small, I should report that the correlation...
New to statistics and I'm sure that will be obvious!
I'm taking over from someone at work they conduct some analysis on something :
A test group are receiving an email.
A control group are not.
The two categories are:
Does sign up to online account management
Does not sign up to...