Suppose we have collected students’ grades at a certain test, and we have found that the mean of grades for male students is 70.2 and the mean for female students is 72.59.
We can see that the two means are different but, is this difference statistically significant?
T-Test can determine if there is a significant difference between the means of two groups.
The following article demonstrates on t-test and how we can effectively use it to test our hypothesis.