As of May 2015, an article in en.wikipedia.org on “Minimum wage” reported (in U.S. dollars) the minimum wage per hour for five nations: $15.61 in Australia,

$12.52 in France, $9.85 in Canada, $7.25 in the United States, and $0.62 in Mexico. Find the mean, range, and standard deviation

(a) excluding Mexico,

(b) for all five observations. Use the data to explain the effect of an outlier on these measures.