Weight (pounds) 4.6 Comparing Salaries The scatterplot shows the salary and year of first employment for some professors at a college. Explain, in context, what the negative trend shows. Who makes the most and who makes the least? (Source: Minitab, Student 12, "Salary.") 100 90 80 (thousands of dollars per year) Salary 70 60 50 40 1985 1990 1995 2000 2005 2010 Start Year 4.7 Sisters and Brothers The scatterplot shows the numbers of brothers and sisters for a large number of students. Do you think the trend is somewhat positive or somewhat negative? What does the direction (positive or negative) of the trend mean? Does the direc- tion make sense in this context? ONWADONDO Number of Brothers 0 1 2 3 4 5 6 7 8 9 Number of Sisters