10.129 Describe two limitations of the study, as explained in the sections titled “Representativeness of the sample” and

“Limitations of the study.”

Medical research makes frequent use of statistical methods shown in this chapter. At British Medical Journal (BMJ) bmj.
com on the Internet, pull up the April 19, 2003, issue. Browse through the article titled “Behavioural counseling to increase consumption of fruit and vegetables in low income adults:
randomized trial” by A. Steptoe et al. You will see a variety of statistical analyses used.