Problem below refers to the following data for the variable "cognitive ability":
77 82 87 88 48
76 91 73 79 89
76 83 88 85 63
85 88 84 87 81
81 83 80 80 68
74 84 91 85 88
75 83 82 68 91
70 91 67 78 86
66 86 82 39 87
79 69 74 73 89
Problem:
Which is the best measure of central tendency for the scores above? Please explain your answer in your own words to a person who has never had a course in statistics.