👉 Lumping is a type of mathematical expression or notation used in mathematics to indicate that an element of a set is not evenly distributed throughout the set, with some elements being more concentrated than others. This can be useful for expressing and analyzing data distributions where certain values are more prevalent than others. For example, in statistics and probability theory, when you say "There exists a value x such that p(x) > 0.5," "x" is lumped into the set of values with probabilities