prep 13那道题，怎么半天没看明白啊！！急！！

fish666

for each of four categories, a state/territory is typlical if and only if it is among the 50% of the listed states/territories  that are closest to the median value  for that category.

问题一：for each of four categories, 那里来的什么四个分组啊？？？？四个？？？什么四个？？
问题二：it is among the 50% of the listed states/territories  that are closest to the median value  for that category 不知道什么意思，那位大虾给翻译一下？
谢谢啦

fish666

啊，一天就要过去了，没人知道么？

fish666

至今没有人知道吗？