Review the student's textbook and notes. While you likely have some basic memory of statistics, it is advantageous to review the student's materials to both refresh your knowledge and make sure that the way in which you remember completing the problems is the same way in which the student has been asked to complete them.
Draw a diagram of the problem. Many students benefit from having a visual reference. Before tackling a problem, make a picture of it with the pupil. For example, if the problem discusses 10 people flipping coins, you could create 10 stick figures and draw circles to represent the coins, writing heads or tails as necessary to indicate the result of each flip.
Move through a specific problem with the student. Give the student one sheet of paper, and take another for yourself. Work through the problem together, both of you writing each step in problem completion. By completing the challenging problem in this fashion you ensure that the student benefits from writing out the problem steps, but you're still giving him your work to look at as a reference point if he gets confused.
Check the student's work using your solution. If the student's book contains answers to some of the questions, you can use these as a reference as well, ensuring that your work is correct.
Identify the area of confusion by moving through the problem completion steps, if the student did not reach the right answer. Start from the top of the problem and check off the steps as you determine that they were completed correctly. When you reach the point of error, correct the error and work forward again from that point.
Provide the pupil with authentic practice to assist him in understanding the basics of statistics. If the student seems to lack a conceptual understanding of statistics, seek real life examples to help him comprehend the subject. Gather mentions of statistics from magazines and newspapers, or carry out family statistics experiments, allowing your learner to poll other family members on topics of interest, such as favorite dinners.