Draw a bar graph for the data on the first five stocks in given problem. Is any one of the three kinds of plot more appropriate than the others for these data? If so, why?
Problem
The following data are annualized returns on a group of 15 stocks.
12.5, 13, 14.8, 11, 16.7, 9, 8.3, -1.2, 3.9, 15.5, 16.2, 18, 11.6, 10, 9.5
Find the median, the first and third quartiles, and the 55th and 85th percentiles for these data.