Two Sample T Test Test Statistic. Other t tests include the one sample t test which compares a sample mean to a theoretical mean and the paired t test. The independent t test also called the two sample t test independent samples t test or student s t test is an inferential statistical test that determines whether there is a statistically significant difference between the means in two unrelated groups.
Calculate the p value of the test statistic t. Test statistic in a two sample t test practice khan academy. Sample size n1 40 sample mean weight x1 300 step 2.
One of the most common is student s t test for two samples.
The test statistic is 2 79996. Other t tests include the one sample t test which compares a sample mean to a theoretical mean and the paired t test. The software shows results for a two sided test and for one sided tests. Where and are the means of the two samples δ is the hypothesized difference between the population means 0 if testing for equal means s 1 and s 2 are the standard deviations of the two samples and n 1 and n 2 are the sizes of the two samples.
