Tukey's Lambda Distribution is a type of probability distribution. It lets us descibe a range of probabilities (or chances of something happening) that are spread out across a range of numbers. It's most often used to look at how likely something is to happen, but it can also be used to describe how likely something is to be within a particular range. For example, if you want to know how likely it is for something to happen between 10 and 20, you can use Tukey's Lambda Distribution to find the answer.