So, when you want to know how close your sample results are to what's true for the whole group, a t-distribution will give you a better estimate than a normal distribution.

A trade with a high probability of success is a very different animal than a low probability long shot. In many of my articles I include a probability calculation in order to give readers some ...

A probability distribution based on sales projections can help you determine the likelihood of exceeding 500 service calls each year, and if so, by how much. This makes it easier to decide on the ...

Each die has a 1/6 probability of rolling any single number, one through six, but the sum of two dice will form the probability distribution depicted in this image. Seven is the most common ...