When the sample size is 15 and you are doing a t test for the mean, the number of degrees of freedom is 15.
true or false
False.
When conducting a t-test for the mean and the sample size is 15, the number of degrees of freedom is not 15. Instead, it is the sample size minus one. Therefore, the correct number of degrees of freedom would be 15 - 1 = 14. Degrees of freedom are used in statistical analyses to account for the fact that certain values are fixed or estimated from the data, reducing the number of free values that can vary independently.