<span style="font-size:14px;font-family:宋体">如果两个变量之间的相在系数为</span><span style="font-size:14px;font-family:#39;Times New Roman#39;,#39;serif#39;">-1</span><span style="font-size:14px;font-family:宋体">,这说明两个变量之间是(</span><span style="font-size:14px;font-family:#39;Times New Roman#39;,#39;serif#39;"> </span><span style="font-size:14px;font-family:宋体">)。</span>对