Paired T Test Formula Statistics. This video uses pre test and post test scores to ch. Where d bar is the mean difference s is the sample variance n is the sample size and t is a student t quantile with n 1 degrees of freedom.
Where σd is the sum of the differences. Calculate the sample mean. Once you ve looked at the one sample t test formula you shouldn t have too much trouble with the paired t test formula.
Df n 1 16 1 15 d f n 1 16 1 15.
Once you ve looked at the one sample t test formula you shouldn t have too much trouble with the paired t test formula. Calculate the difference d between each pair of value. The t value with α 0 05 and 15 degrees of freedom is 2 131. μ1 μ2 the two population means are not equal.
