ECON 219 Study Guide - 60Th United States Congress, Joule, Box Plot

• School: McGill University
• Department: Economics (Arts)
• Course: ECON 219
• Professor: Kenneth Mac Kenzie

Document Summary

At the eurelian space agency a test was performed to determine the usefulness of a new training system. Half of the subjects received the training and half did not. They were then all tested, and each subject was given a score from 0 to 60. a) One of the following data sets is a stem-and-leaf diagram of the scores. Use tukey"s method to find the five-point summary of data set ii). Use the interpolation method to find the 60th percentile of data set ii). By the way, i do not expect you to calculate all of the z- scores. Consider this data set (not in stem-and-leaf notation). Note that each number occurs with frequency equal to itself, e. g. there are seven sevens. Give two reasons for your answer: the visual reason and the criterion involving the mean and median. A renegade statistician insists on saying that data are outliers whenever their z-score is bigger than 2 or smaller than 2.