四(1)班
37.7 33.5 28.5 27 37.9 42.9 32.7 33.6 52.6 34.8 38.3 28.6 41.8 29.8 43.1 67.9 38.8 36.9 48.2 35 |
33.8 80 37 33.9 28 51 30.4 45.9 36.2 54.9 40 52.5 63.7 53.9 32.4 28.75 47.5 44 34.8 29 |
30以下 | 30—40 | 40.1—50 | 50.1—60 | 60以上 | |
四(1) | |||||
四(2) |
(3)四(1)班在40.1-50kg范围内的平均体重是多少?

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

