Commute times: Every morning. Tania leaves for work a few minutes after 7:00 A.M. For eight days.
Question:
a. Construct a scatterplot of the length of commute (y) versus the time leaving (x).
b. Compute the least-squares regression line for predicting the length of commute from the time leaving.
c. Compute the coefficient of determination.
d. Which point is an outlier?
e. Remove the outlier and compute the least-squares regression line for predicting the length of commute from the time leaving.
f. Is the outlier influential? Explain.
g. Compute the coefficient of determination for the data set with the outlier removed. Is the relationship stronger. weaker, or about equally strong without the outlier?
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