1. A physical therapist wants to get a sense of the types of rehabilitation required by her patients. To do so, she obtains a random sample of 30 of patients and records the body part requiring rehabilitation. Here are the data: BACK BACK HIP HIP KNEE HIP SHOULDER HAND GROIN WRIST BACK KNEE HIP SHOULDER HAND GROIN WRIST BACK KNEE HIP SHOULDER HAND GROIN WRIST BACK KNEE HIP SHOULDER HAND GROIN a) Make a frequency table using paper and pencil. Find all the percents and compute the degrees of each category. b) Draw bar graph and pie-chart using paper and pencil