What is a t-distribution?
A) A representation of probability distributions that change shape as the sample size increases*
B) A means of calculating the standard error
C) A representation of the distribution of the means
D) A means of calculating probability

Question

Quizplus · Accepted Answer

A t-distribution is a probability distribution that changes shape as the sample size increases. It is used in hypothesis testing when the population standard deviation is unknown and must be estimated from the sample. The t-distribution is similar to the normal distribution but has heavier tails, meaning that extreme values are more likely to occur.

What Is a T-Distribution