求中位数:65,60,58,55,60,62,75,75,60,58,58,65.

问题描述:

求中位数:65,60,58,55,60,62,75,75,60,58,58,65.

首先将这12个数从小到大的顺序排列
55,58,58,58,60,60,60,62,65,65,75,75
中位数=第6和第7个数的平均数=(60+60)÷2=60