In statistics and probability theory, distributions refer to mathematical functions that describe the likelihood of different outcomes or values within a dataset. There are many different types of distributions, each with its own unique characteristics and properties. Common distributions include normal distributions, uniform distributions, binomial distributions, and Poisson distributions, among others. These distributions are used to model and analyze various types of data in fields such as finance, economics, biology, and social sciences. Understanding distributions is essential for making predictions, calculating probabilities, and drawing valid conclusions from data.