Please help, I do not understand how I got the ones marked wrong.

29 A price-earnings ratio or P/E ratio is calculated as a rm's share price compared to the income or profit earned by the rm per share. Generally, a high P/E ratio suggests that investors are expecting higher earnings growth in the future compared to companies with a lower P/E ratio. The accompanying table shows companies that comprise the Dow Jones Industrial Average (DJIA) and their P/E ratios as of May 17, 2012 (at the time data were retrieved, the P/E ratio for one firm on the DJIA, Bank of America, was not available). \fa. Calculate the 25th, 50th, and 75th percentiles. (Use the methodology shown in Section 3.2 of the text to calculate the percentiles. Do not round intermediate calculations. Round your answers to 1 decimal place.) 25th percentile 11.3 X 50th percentile 15.0 75th percentile 19.0b-1. Select a box plot Box Plot A Box Plot B Box Plot C led O Box Plot A 6) Box Plot B o O Box Plot C b-2. Calculate the IQR, lower limit and upper limit to detect outliers. (Round your intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) IQR 7.70 Lower limit 16.95 X Upper limit 28.50 X