The AJ Fitness Club is a full-service fitness center that offers its members the latest in weight machines, cardio equipment, and exercise classes. The company has surveyed its members to learn how satisfied they are with the services provided by the club. The data for this survey are in the file called AJFitness.
a. Calculate the mean and median age for those surveyed. Does the age distribution appear to be skewed or symmetric? Explain your answer.

b. Calculate the standard deviation for age.
c. Calculate the coefficient of variation for age.
d. Calculate the mean and standard deviation for the variable Typical Visits per Week broken down by gender.