8 | 10 | 9 | 11 | 9 | 10 | 12 | 14 | 15 | 13 | 6 | 5 |
6 | 2 | 10 | 9 | 1 | 1 | 3 | 7 | 3 | 7 | 6 | 9 |
8 | 5 | 4 | 6 | 2 | 7 | 1 | 15 | 5 | 8 | 1 | 4 |
四年级(1)班学生一周上网时间统计表
( )年( )月
时间/时 | 合计 | 1~3 | 4~6 | 7~9 | 10~12 | 13~15 |
人数 |
(3)上网时间在( )范围内的人数最多。
(4)根据统计的结果,你还能想到什么?(至少写一条)
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