100 98.2 99.4 98.7 98.1 99.0 97.9 100
99.3 98.5 97.6 99.4 99.3 99.8 99.2
(1)请把1号选手的成绩整理在下面的统计表中.
成绩 | 100 | 99.0~99.9 | 98.0~98.9 | 97.0~97.9 |
成绩数 | | | | |
(2)去掉一个最高分,去掉一个最低分,列式求1号选手的平均成绩.(只列式不计算)
(3)1号选手的成绩 范围内的最多.
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