In our most recent Algebra class, we learned about data points, linear correlation and standard deviation/the distance between the points and the actual slope of the line.
Discovering the line in relation to your data (done on your trusty graphing calculator) is highly useful for discerning whether your data makes any sense and allows you to confirm trends. If the data points are all directly on the line, you know that you have a consistancy in whatever you are observing. If the data points gather around the general direction of your line, then that's o.k. too. Concern should only occur when you get sporadic points all over your graph-which indicates that you are recording very random things.
We also learned about Integral Theory, where the shape, color, size etc. represent different characteristics of each point such as the ethnicity or wealth of a country.
Ms. J showed us an interesting video about how to not make data boring : http://www.youtube.com/watch?v=hVimVzgtD6w
another mathy link:
there are these things called fractals, which can be constructed through mathematical equations (sometimes on graphs). I guess it's also qualifies as art. http://www.youtube.com/watch?v=HjZFD6MCmPA&feature=related
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