Student's t-distribution

Student's t-distribution is a statistical tool used to estimate population parameters when the sample size is small, or when the population standard deviation is unknown. It resembles a bell curve but has heavier tails, which means it accounts for more variability and uncertainty in the data. This is particularly useful in small sample studies, where data points can be more spread out. As sample size increases, the t-distribution approaches the normal distribution, making it a flexible choice for hypothesis testing and confidence intervals in various fields, including science and social sciences.