Graphs For each of the following data sets, a. Create a scatterplot. b. Use LinReg(axb)

Chapter 2, Problem 39

(choose chapter or problem)

Graphs For each of the following data sets, a. Create a scatterplot. b. Use LinReg(axb) to determine the best fit line and r. Does the line seem to accurately describe the pattern in the data? c. For each of the different choices listed in the above chart, find the equation of the best fit curve and its associated r 2 value. Of all of the curves, which seems to provide the best fit? Note: The r 2 -value reported in each case is NOT the linear correlation coefficient reported when running LinReg(axB). Rather, the value will typically change depending on the curve. The reason why is that each time, the r 2 -value is measuring how accurate the fit is between the data and that type of curve. A value of r 2 close to 1 still corresponds to a good fit with whichever curve you are fitting to the data.