Calculate the 11th and 56th percentiles of the data set shown below. Pu=1 x 16 1 18 9. 27 17 13 15 3 24 20 This means that approximately 11 O % of the data lie at or below 11 x, when the data are ranked. P56 16.5 x 0 This means that approximately 56 % of the data lie at or below 56 x 0, when the data are ranked.