The Student's t distribution has a mean of zero and the shape is determined by the number of degrees of freedom.

Question

Quizplus · Accepted Answer

The mean of the Student's t distribution is indeed zero, but the shape is not only determined by the number of degrees of freedom, but also influenced by the sample size and standard deviation. However, as the degrees of freedom increase, the shape of the distribution approaches a normal distribution.

The Student's T Distribution Has a Mean of Zero and the Shape