NOTE: this sketch may work better downloaded and run in ggb than in the student worksheet (online version).
#GGBchat 4:
Q4a: Try this basic 2-var tools or watch this [url]http://tinyurl.com/twovarmov [/url]
Q4b: What questions could you ask a S from this type of visualization?
@a_mcsquared A4b: Which is the best model, linear or quadratic?
