BME-435-001 - HW Due 2/11 kagaris@engr.siu.edu Wed 2/10/2021 11:56 AM Create a data frame from the dataset (posted in D2L) "PSA_dataset.csv". The data set contains records of patients that were examined for Prostate cancer. Each patient can have multiple records. For each patient two measurements were taken: Free PSA ("Free Prostate Specific Antigen"), and True PSA ("True Prostate Specific Antigen"). There is also an indication of whether each patient was found to be cancerous (d=1) or not (d=0). (1) Extract the data frame consisting of cancerous patients only. (2) For each age compute the mean TPSA and the mean FPSA over all patients (cancerous or not). Then for each age compute the mean TPSA and the mean FPSA over all patients that are not cancerous and over all patients that are cancerous. (3) Extract a data frame that for each patient contains only the first record. (4) Construct a data frame consisting of columns "id", "d", "min TPSA", "maxTPSA" that lists for each patient the id, the "d" indication, the min TPSA and the max TPSA of the patient