1. The yearly incomes of the top highest paying professions in the United States are shown below. Profession IYearly Income (in $1,000) Surgeons 136 Obstetricians 132 Anesthesiologists 130 Internists 126 Pediatricians 116 Psychiatrists 114 Dentists 110 General Practitioners 110 Chief Executives 107 Airline Pilots 99 For the above sample, calculate the following (Show your work) (6 Points) a. The mean yearly salary b. The mode C. The median d. The variance and standard deviation