The lengths (in feet) of the main span of the longest suspension bridges in the United States

Question:

The lengths (in feet) of the main span of the longest suspension bridges in the United States and the rest of the world are shown below. Which set of data is more variable?
United States: 4205, 4200, 3800, 3500, 3478, 2800, 2800, 2310
World: 6570, 5538, 5328, 4888, 4626, 4544, 4518, 3970