A developmental psychologist surveyed 15 single senior citizens living in private apartments. Each participant completed a questionnaire on the number of telephone conversations he or she had in the last day. Their answers were as follows: 5, 0, 2, 1, 1, 0, 1, 0, 3, 1, 1, 4, 3, 4, and 7. Required:
a. What is the variable being measured?
b. Is the variable measured on a continuous or discrete scale?
c. Make a frequency table.
d. Make a histogram based on the frequency table.
e. Describe in words the shape of the histogram (symmetry, skew, number of modes, etc).