The days when a private tutor would arrive home for taking on a single student and help with the homework assigned for his statistics subject, has long ceased. In more recent times, we saw the advent of tuition classes after the normal classes in schools and college. Here a group of student would get to gather and a private teacher would once again teach them statistics or help them with the homework assigned. However, in both these cases, the student would find that the teacher helps the student to understand certain part of the subject that they may not have been able to clarify at the regular class.