<p>Hey guys I have a AP stats problem I want to get cleared up. If I know one variable and it helps me predict the results of another variable (both quantitative); this is a correlation that's cuasation right? And I determine this off of the correlation coefficient, which tells us the strength right? Thanks... my teacher and book did not explain thsi very well.</p>
<p>Hey, I am taking that class too. HOw do you like it so far?
Answering your Question, correlation does NOT mean causation.
6 things my teacher told us about Correlation, r:
- measures strength and direction of linear associations only
- is immune to shifting/scaling units of measurements
- is not resistant to outliers
- r is b/w -1 & 1
- Both vars are quantitative
- Correlation does NOT mean causation. </p>
<p>So, if you take the two variables years of education and income, you see that there is a positive association between the two. Years of education PREDICTS a higher income, it doesn’t necessarily cause it.
Sorry about the long ramble here.</p>
<p>oh gotcha… thank you very much! My AP stats class right now is ok, but definitely not as easy as some people on CC make it seem.</p>
<p>I find that Stat is more subjective than other math classes like Calculus. This can make the class easier or harder. Usually easier.</p>
<p>you’re welcome! no, i know what you mean about the stats thing. so far it’s so-so but i bet it’s going to get harder</p>