Poor understanding of ratios leads to bad shopping decisions, says University of Miami study

(University of Miami) A new study published in the Journal of Marketing Behavior, says in situations where consumers must average ratio information, such as comparing the fuel efficiency of two cars using the ratio miles per gallon, they often incorrectly assume the mathematic equation to find miles per gallon would be to average the sum of the mileage of both cars and then divide by two, instead of using a more complex equation needed to accurately compare ratios.

from EurekAlert! - Social and Behavioral Science http://ift.tt/2qFDcMn