Linear Regression 2

• First, the function will work for any data.
• There may be no real correlation (or anti-correlation).
• What do I do about that? Test for significance.
• Research Methods Knowledge Base says to do a two tailed test, which I couldn't figure out quickly.
• Secondly, pictures are cool. I could have done a better one, but this took 20 minutes. They often take time, but the more you do it the better you get.
• Thirdly, excel is cool. It has a lot of functions. You need to know what they mean to use them sensibly.
• Fourthly, the data is important. If I did this with people over 40, I'd probably find little correlation.