Paired T Test Test Statistic Formula. We compare the value of our statistic 0 750 to the t value. A paired samples t test always uses the following null hypothesis.
N is the sample size i e size of d. Calculate the t statistic which is given by t d se d. This will give the p value for the paired t test.
Under the null hypothesis this statistic follows a t distribution with n 1 degrees of freedom.
Where σd is the sum of the differences. Use tables of the t distribution to compare your value for t to the t n 1 distribution. The paired t test statistics value can be calculated using the following formula. 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.
