Paired T Test Statistic Formula. Df n 1 16 1 15 d f n 1 16 1 15. μ1 μ2 the two population means are not equal.
If there is any significant difference between the two pairs of samples then the mean of d is expected to be far from 0. Use tables of the t distribution to compare your value for t to the t n 1 distribution. Under the null hypothesis this statistic follows a t distribution with n 1 degrees of freedom.
Dependent t test equation.
D differences between two paired samples. μ1 μ2 the two population means are not equal. Overline d the sample mean of the differences. S is the standard deviation of d.
