What does a convex, a concave, a convex-concave, or a concave-convex normal plot indicate? (30 points)
For distributions that are left-skewed, what kind of a Box-Cox transformation should be used? Explain the reason. (30 points)
For a right-skewed distribution, if after being transformed with a Box-Cox transformation, it becomes left-skewed, what does this mean? Explain the reason. (40 points)
()因素促使计算机系统越来越复杂。
A. 计算机内存和存储容量的巨大增长。
B. 外部输入/输出选项的更加多样性
C. 计算机体系结构方面的深刻变化
D. 以上所有选项