I've never had my IQ measured before. After some research I decided to take the Raven's Standard Progressive Matrix test. After Googling I found this Wikipedia page. This test was linked on the Wikipedia page, and I took the test and acquired my raw score.
I understand that I may need to take the advanced version of the test if my score is high enough, but that's besides the point. After acquiring my raw score, I researched how to get a rough IQ conversion. I found this question here. It describes how to convert your raw score to a z-score, and then get a rough estimate of IQ from the z-score.
However, acquiring the z-score requires norms for the raw scores, if I'm not mistaken.
Where can I find the norms? Specifically, I need the mean raw score and the standard deviation for the United States general population.