Question

Questions 19 20 Psoriasis is a skin disorder with no known cure and no proven effective pharmacological treatment. An alternative treatment for psoriasis is ichthyotherapy. Fish from the hot pools of Kangal, Turkey, feed on the skin scales of bathers, reportedly reducing the symptoms of psoriasis. In one study, 67 patients diagnosed with psoriasis underwent three weeks of ichthyotherapy. The Psoriasis Area severity Index (PASI) of each patient was measured both before and after treatment. (The lower the PASI score, the better is the skin condition.) The box plots of the PASI scores, both before (baseline) and after three weeks of ichthyotherapy treatment is shown below 19. Find respectively, the approximate 25th percentile, median, and 75 percentile for the PASI scores before treatment. A. Approximately 2, 25, 42 respectively B. Approximately 20, 39, 30 respectively; C. Approximately 30,20, 39 respectively; D. Approximately 2, 30, 50 respectively E. Approximately 15, 25, 32 respectively 20. Find respectively, the approximate 25h percentile, median, and 75 percentile for the PASI scores after treatment. Then comment on the effectiveness of icythyotherapy in treating psoriasis.

Answer 1

19. E

20. D

21. A$.$