The scatterplot shows the median starting salaries and the median mid-career salaries for graduates at a selection of colleges. Complete parts (a) through (e) below. .mss' Drum-q Mid-Career: -4101 + 1.921 Start Med T5 50 25 30 40 50 60 ?0 80 Start Median Salary (thousands of $) MidCareer Salary (thousands of S) a. As the data are graphedI which is the independent and which the dependent variable? The independent variable is median starting salary and the dependent variable is median mid-career salary. b. Why do you suppose median salary at a school is used instead of the mean? A. It is easier to calculate the median for a salary distribution instead of the mean. B. Salary distributions are usually bimodal. making the median a more meaningful measure of center. Mg Salary distributions are usually skewed, making the median a more meaningful measure of center. D. Salary distributions are usually bell-shaped, making the median a more meaningful measure of center. c. Using the graph, estimate the median mid-career salary for a median starting salary of $70,000. The median mid-career salary for a median starting salary of $70,000 is about $|:|. (Round to the nearest thousand as needed.)