NO.PZ2021061603000031
问题如下:
A correlation of 0.34 between two variables, X and Y, is best described as:
选项:
A.changes in X causing changes in Y.
B.a positive association between X and Y
C.a curvilinear relationship between X and Y
解释:
B is correct. The correlation coefficient is positive, indicating that the two series move together.
我能理解Correlation是正的代表正相关反而风险分散机制弱么?