所以 scaling 是计算的意思？•﹏•
问题如下图：
选项：
A. 
B. 
C. 
D. 
解释：
NO.PZ2016062402000002问题如下 Whione of the following statements about the correlation coefficient is false? It always ranges from -1 to +1. A correlation coefficient of zero means thtwo ranm variables are inpennt. It is a measure of linerelationship between two ranm variables. It ccalculatescaling the covarianbetween two ranm variables. Correlation is a measure of linear association. Inpennimplies zero correlation, but the reverse is not always true. 请问答案什么意思呢，有点看不懂，是指可以通过求covarian来求correlation是吗？
请问coefficient corelation是R^2吗？还是BETA，还是R
请问为什么不选A？
