The following data represent the length of life, in seconds, of 50 fruit ies subject to a new spray in a controlled laboratory experiment: 17 20 10 9 23 13 12 19 18 24 12 14 6 9 13 6 7 10 13 7 16 18 8 13 3 32 9 7 10 11 13 7 18 7 10 4 27 19 16 8 7 10 5 14 15 10 9 6 7 15 (a) Construct a double-stem-and-leaf plot for the life span of the fruit ies using the stems 0,0 ,1 ,1 ,2 ,2 , and 3 such that stems coded by the symbols and are associated, respectively, with leaves 0 through 4 and 5 through 9. (b) Set up a relative frequency distribution. (c) Construct a relative frequency histogram. (d) Find the median.

Week 4: Bivariate Data 27 September 2016 Basic Statistics for Research Professor HK Dong Wendy Liu Bivariate/multivariate data – observations on two or more variables Marginal totals – total frequency of any row or column of a data table, given in the right-hand margin or bottom margin Simpson’s paradox – reversal of conclusions from a data table after combining several data...