Yeah, you need at least an MS in psychology for anything worthwhile, and if you want to do therapy you need more schooling beyond that (though not necessarily as much as a PhD/PsyD). Psych stats can be the easiest or hardest math classes ever. I got a C in my stats class, but then I got an A in my Research Methods classes and B+s in my Masters level Research classes. My grades fluctuated about 80% based on how much of a dick the professor was.
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