I am amazed at the complex statistical questions people ask on this site and I have learnt a lot from them. Thank you all!
However, I have focused on correlation because it is the easist method to understand for a person like me who has no formal training in statistics but is required to do market research as part of my job. A lot of my projects seek to test the relationship between two variables, so Pearson's r is the one I use.
I know each statistical method has a specific purpose and requires certain basis assumptions to be met to function well.
- Can correlation (in particular, Pearson's r) be an end in itself?
- Given all the advancements in statistical testing, is it still a robust method for data analysis?