对每一类不同的人群，他们校友的各项费用分为学费和杂费，然后对于所有数字求了平均数，最后将数字转化成为一个百分数。

For each class, we divided the median alumnus salary by tuition and fees, averaged the results and, finally, converted that result to a percentage figure.

youdao

对每一类不同的人群，他们校友的各项费用分为学费和杂费，然后对于所有数字求了平均数，最后将数字转化成为一个百分数。

For each class, we divided the median alumnus salary by tuition and fees, averaged the results and, finally, converted that result to a percentage figure.

youdao