2001 AP STATISTICS FREE-RESPONSE QUESTIONS STATISTICS SECTION II Part A Questions 1-5 Spend about 65 minutes on this part of the exam. Percent of Section II grade-75 Directions: Show all your work. Indicate clearly the methods you use, because you will be graded on the correctness of your methods as well as on the accuracy of your results and explanation. 1. The summary statistics for the number of inches of rainfall in Los Angeles for 117 years, beginning in 1877, are shown below. N MEAN MEDIAN TRMEAN STDEV SE MEAN 117 14.941 13.070 14.416 6.747 0.624 MIN MAX 1 03 4.850 38.180 9.680 19.250 (a) Describe a procedure that uses these summary statistics to determine whether there are outliers. (b) Are there outliers in these data? Justify your answer based on the procedure that you described in part (a). (c) The news media reported that in a particular year, there were only 10 inches of rainfall. Use the information provided to comment on this reported statement