Divide into groups of four or five students. The Chapter Problem noted that according to Benford’s law, a variety of different data sets include numbers with leading (first) digits that follow the distribution shown in the table below. Collect original data and use the methods of Section 11-1 to support or refute the claim that the data conform reasonably well to Benford’s law. Here are some suggestions: (1) leading digits of smartphone passcodes; (2) leading digits of the prices of stocks; (3) leading digits of the numbers of Facebook friends; (5) leading digits of the lengths of rivers in the world.