T Test Test Statistic Formula. In this formula t is the t value x and x are the means of the two groups being compared s and s are the standard error of the two groups and n and n are the numbers of observations in each of the groups. Standard deviation of first set of values.
T m μ s n. If tails 1 t test returns the probability of a higher value of the t statistic under the assumption that array1 and array2 are samples from populations with the same mean. S 2 x m a 2 x m b 2 n a n b 2.
Standard deviation of first set of values.
The student s t test is shown below. Once we have the t value we have to look at the t tables. Total number of values in first set. T test uses the data in array1 and array2 to compute a non negative t statistic.
