A study of AARP members was conducted to determine when people officially joined the organization. Ten members were randomly selected, and their ages were recorded as follows:

56, 56, 56 ,58, 59, 60, 62, 64, 64, 65

using the above data set, show your work in the space provided to determined the following information:

a) The sample mean

b) The median

c) The mode

d) The interquartile range

e) The standard deviation