1. Consult an almanac, newspaper, magazine, or the Internet to find data that appear to lie approximately on or near a straight line. A few of the many free sources of data that might be appropriate to use are:
http://data.worldbank.org/http://www.statcrunch.com/5.0/shareddata.php?keywords=DATAhttp://datacatalogs.org/http://data.gc.ca/eng
2. Create a scatterplot and a line fitting the data in one of two ways:
a. To do this activity by hand, create a scatterplot by plotting the (x, y) data in a Cartesian (rectangular) coordinate system. Then, draw a line that approximately fits the data in the scatterplot, and then write its equation as a function in slope-intercept form. An easier way, and one that produces better looking results, is to find the equation of the line for your data using this free, online linear regression calculator: http://www.alcula.com/calculators/statistics/linear-regression/.
b. To use the regression calculator:
3. Also include a link to your data, along with an explanation of what the x and y axes represent in your graph.
To gain full credit for your work, you must complete all the directions.
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