学号 | 06 | 12 | 13 | 18 | 22 | 23 | 36 | 42 |
踢毽数(个) | 87 | 40 | 12 | 32 | 25 | 80 | 16 | 80 |
(1)这组同学踢毽子个数的平均数是 ,中位数是 ,众数是 .
(2)分析这组数据,你认为哪个数更能代表这一组同学踢毽的一般水平?为什么?
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