Vast amounts of data that are now available and allow us to study phenomena in a way that would have been impossible only a few years ago.
Also used in hcistats2e: Chap. 1: pages 5, 9, 17; Chap. 12: page 136; Chap. 15: page 188
Also used in hcistats2e: Chap. 1: pages 5, 9, 17; Chap. 12: page 136; Chap. 15: page 188