Student T Test Formula. It can be used to determine whether two sets of data are significantly different from each other or not. The formula for t test is given below.
In this test statistician follows a student t distribution. T test formula t test definition. Independent two sample t test.
T m a m b s a 2 n a s b 2 n b.
Where s a and s b are the standard deviation of the the two groups a and b respectively. For a two sided test at a common level of significance α 0 05 the critical values from the t distribution on 24 degrees of freedom are 2 064 and 2 064. As mentioned above one sample t test is used to compare the mean of a population to a. T test uses means and standard deviations of two samples to make a comparison.
