小明: 9.9 9.6 9.2 9.3 9.5 9.0 8.5 8.8 9.4 9.5
小兰: 9.6 9.5 9.7 9.4 9.2 9.3 9.6 8.9 9.1 8.5
小刚: 9.9 9.2 9.3 9.5 9.7 9.1 8.8 8.6 9.7 9.5
(1)请将上列数据人数统计填入下表
8.5~9.0 | 9.1~9.3 | 9.4~9.7 | 9.8~10 | |
小明 | ||||
小兰 | ||||
小刚 |
(2)去掉一个最高分,去掉一个最低分,求出三名参赛选手的平均分并从高到低为他们颁奖?(除不尽的保留两位小数)
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2