47 65 42 47 16 36 54 17 21 58 16 31 32 13 22

The following list contains P/E ratios (price of stock divided by projected earnings per share) for health care companies.

Find th and th percentiles for these ratios.

It would help if you proofread your questions before you posted them. What is "the following"? What percentiles do you want to know about?