The t-distribution is a family of probability distributions with a shape similar to the standard normal distribution.

T-distribution

A probability distribution that arises when estimating the mean of a normally distributed population in situations where the sample size is small, and the population standard deviation is unknown.

Probability Distributions

Denotes mathematical functions that describe all the possible values and likelihoods that a random variable can take within a given range.

Normal Distribution

A bell-shaped curve that is symmetric about its mean, representing the distribution of a set of data where most observations cluster around the central peak.