Paired T Test Test Statistic Formula. S is the standard deviation of d. We compare the value of our statistic 0 750 to the t value.
Calculate the t statistic which is given by t d se d. Calculate the difference d between each pair of value. N is the sample size i e size of d.
T frac m s sqrt n where m is the mean differences.
The t value with α 0 05 and 15 degrees of freedom is 2 131. A paired samples t test always uses the following null hypothesis. Calculate the difference d between each pair of value. The formula of the paired t test is defined as the sum of the differences of each pair divided by the square root of n times the sum of the differences squared minus the sum of the squared differences overall n 1.
