Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify for Medicaid. The ages of 14 senior citizens were as follows:
60
61
62
63
64
65
66
68
68
69
70
73
73
74
Calculate the arithmetic mean age of the senior citizens to the nearest hundredth of a year.
84.45
66.86
69.65
61.45
To calculate the arithmetic mean age, we add up all of the ages and then divide by the total number of senior citizens (14).
60 + 61 + 62 + 63 + 64 + 65 + 66 + 68 + 68 + 69 + 70 + 73 + 73 + 74 = 866
866 / 14 = 61.86
Therefore, the arithmetic mean age of the senior citizens is 61.86 (rounded to the nearest hundredth).