Have you wondered how Internet connection speed varies around the globe? The file ConnectionSpeed contains the mean connection speed, the mean peak connection speed, the percent of the time the connection speed is above 4 mbps, and the percent of the time the connection speed is above 10 Mbps for various countries.

Source: Data extracted from bit.ly/2vPmifV.

a. Perform a cluster analysis using the complete linkage method on the various countries based on the mean connection speed, the mean peak connection speed, the percent of the time the speed is above 4 Mbps, and the percent of the time the connection speed is above 10 Mbps.

b. What conclusions can you reach about which countries are most similar?