Isn't a $98K median starting salary for math and CS grads a bit high? Yes, the few lucky ones who get a job at Google or Facebook or an investment bank might make six figures right out of school, but it doesn't seem like there would be enough of those jobs to pull the median up that high. The average CS grad probably won't end up working for an internet company; there are probably many more programming jobs in corporate IT departments.
Their data is incorrect. If you pull up the linked article, the table they sourced is #12 on page 15, titled "Top 10 Majors with the highest median earnings".
That's the median of all salaries for all people in that job description where the highest level of education is a Bachelor's degree, NOT the starting salary as indicated.