题目
题型:西安难度:来源:
70,80,100,60,80,70,90,50,80,70,90,80,90,80,70,90,60,80,70,80.
则这次数学测验中学生得分的众数和中位数分别是( )
A.70,80 | B.80,75 | C.80,70 | D.80,80 |
答案
数据按从小到大排列:50,60,60,70,70,70,70,70,80,80,80,80,80,80,80,90,90,90,90,100,
∴中位数是(80+80)÷2=80.
故选D.
核心考点
试题【在一次数学测验中,20名学生的得分如下:70,80,100,60,80,70,90,50,80,70,90,80,90,80,70,90,60,80,70,80】;主要考察你对中位数等知识点的理解。[详细]
举一反三
A.25 | B.26 | C.26.5 | D.30 |
A.5 | B.6 | C.7 | D.6.5 |