multiplier is a factor of proportionality, a type of variation such that as one variable increases the other decreases.
a type of variation such that as one variable increases the other decreases?
multiplier is a factor of proportionality
the concept of "inverse proportionality" can be contrasted with "direct proportionality". consider two variables said to be "inversely proportional" to each other. if all other variables are held constant, the magnitude or absolute value of one inversely proportional variable decreases if the other variable increases, while their product (the constant of proportionality "k") is always the same. as an example, the time taken for a journey is inversely proportional to the speed of travel.
proportionality (mathematics)
rank correlation coefficients, such as spearman's rank correlation coefficient and kendall's rank correlation coefficient (τ) measure the extent to which, as one variable increases, the other variable tends to increase, without requiring that increase to be represented by a linear relationship. if, as the one variable increases, the other "decreases", the rank correlation coefficients will be negative. it is common to regard these rank correlation coefficients as alternatives to pearson's coefficient, used either to reduce the amount of calculation or to make the coefficient less sensitive to non-normality in distributions. however, this view has little mathematical basis, as rank correlation coefficients measure a different type of relationship than the pearson product-moment correlation coefficient, and are best seen as measures of a different type of association, rather than as alternative measure of the population correlation coefficient.
correlation and dependence