Yale CS 收入最高，這個數據對嗎？

在網上Home | College Scorecard查到Yale CS Major 畢業5年後Medium Earnings $271,466。 CMU 是$251,632，MIT $220K, Stanford $247K, UIUC $170K。(The median annual earnings of students five years after graduation. Only data from students who received federal financial aid are included in the calculation.)

Yale CS 的收入最高。與其它數據不同。如何解釋這個數據？

Yale University | College Scorecard