Ratiooften
Ratiooften is a term used in data analysis to describe the most common ratio between two related quantities across a dataset. It is defined as the mode of the set of pairwise ratios A_i / B_i, for observations i where B_i is nonzero. In practice, ratiooften is estimated by building a histogram or computing a kernel density estimate of the ratios and identifying the peak. If the ratio distribution is multimodal, ratiooften may refer to the set of prominent ratios or to the highest-density ratio.
Origin and usage: The term is a neologism combining ratio and often, used in exploratory analysis to
Calculation example: If A = [4, 8, 9] and B = [2, 4, 3], the ratios are [2, 2,
Properties: Ratiooften is invariant to common linear scaling of both quantities. It is undefined when all B_i
Applications: In economics to compare price-to-cost ratios, in biology to compare concentration ratios, and in quality
Limitations: It reflects only central tendency of ratios and can be misleading with skewed or multimodal distributions;