题目
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.
答案
B
解析
B is correct. The correlation coefficient is positive, indicating that the two seriesmove together. 相关系数为正，表明这两个变量正相关变化的。因此，选项B是正确的