Ask your peers about their online social media usage. In particular collect information on (a) whether they use Facebook, Instagram, and Snapchat, (b) how often they use each social media service, and (c) their overall satisfaction with each of these services using a 5-point numerical scale where 1 represents totally unsatisfied and 5 represents totally satisfied. Are the resulting data structured or unstructured? Are the data cross-sectional or time series?