序号 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
实际质量(克) | 501 | | | 500.6 | | | 499.4 | 500 |
误差(克) | +1 | ﹣0.8 | ﹣2.4 | | ﹣0.7 | +0.5 | | |
(1)这8袋食品的平均质量是 克,标准质量是 克.
(2)把表格补充完整.
(3)这8袋食品的中位数是 克.
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