Table 14.5.1 gives in-state tuition costs (in dollars) and four-year graduation rate (%) for 15 randomly selected

Question:

Table 14.5.1 gives in-state tuition costs (in dollars) and four-year graduation rate (%) for 15 randomly selected colleges taken from a list of the 100 best values in public colleges
(a) Draw a scatterplot.
(b) Fit a least-squares line and graph it.
(c) Looking at the scatterplot of part (a), do you think the least-squares line is a good choice? Discuss.