如果你试图创建一家公司,就像烘焙蛋糕。你必须以正确的比例拥有所有的成分。
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。
The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.