Negative Correlation
Negative correlationIt refers to two columns of variables that change in opposite directions. When one column of variables changes, the other column of variables will change in the opposite trend of the previous variable.
The correlation coefficient r can represent the degree of correlation. When -1 ≤ r ＜1, the larger the absolute value of r, the higher the correlation between the variables. When r is a negative number, an increase in one variable may cause a decrease in another variable, which is a negative correlation.
The corresponding method is the positive correlation method, in which the two variables change in the same direction, that is, when one variable changes from large to small or from small to large, the other variable is the same.