The degrees of freedom associated with a t distribution are a function of the​

A) ​area in the upper tail.
B) ​sample standard deviation.
C) ​confidence coefficient.
D) ​sample size.

Degrees of Freedom

The quantity of independent variables or measures that can change during the computation of a statistic.

T Distribution

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

Sample Size

The number of observations or data points that are used in a statistical sample.