The average number of hours that people of Brazil spend per month on social networking sites is nearly double the worldwide average, drawing the attention of companies such as Facebook. The following data represent the number of hours that a sample of people from Brazil spent on a social networking site last month.

1.5 1.0 2.3 12.1 8.8 13.2 40.2 1.5 12.4

a. Calculate the mean.

b. Calculate the median.

c. Determine the mode.

d. Which of these three measurements would best describe the central tendency of the data? 

e. Describe the shape of the distribution.