The stem-and-leaf plot shows the speeds of the fastest steel roller coasters in Europe. The table shows the speeds of the fastest steel roller coasters in North America.
Speeds of the Fastest Steel Roller Coasters in Europe (in miles per hour)
Stem Leaf
7 4 5 5 5
8 0 0 3 4 8
9 9
11 1Key: 7|4=74 miles per hour
Speeds of the Fastest Steel Roller Coasters in North America (in miles per hour)
Canada 90 128 91
U.S. 93 120 100
Mexico 95 92 85
Find the range of the speeds of the fastest steel roller coasters on both continents.
(1 point)
The range of the speeds of the fastest steel roller coasters in Europe is 41 mph (119 - 78).
The range of the speeds of the fastest steel roller coasters in North America is 43 mph (128 - 85).
Therefore, the combined range of the speeds of the fastest steel roller coasters on both continents is 43 mph.
To find the range of the speeds of the fastest steel roller coasters on both continents, we need to find the difference between the highest and lowest speeds in each set of data.
The highest speed in the Europe data is 111 mph (11|1), and the lowest speed is 74 mph (7|4). Therefore, the range of speeds in Europe is 111 - 74 = 37 mph.
The highest speed in the North America data is 128 mph, and the lowest speed is 85 mph. Therefore, the range of speeds in North America is 128 - 85 = 43 mph.
To find the range of speeds on both continents, we take the highest speed from both sets of data and subtract the lowest speed from both sets of data:
Maximum speed: 128 mph
Minimum speed: 74 mph
Therefore, the range of the speeds of the fastest steel roller coasters on both continents is 128 - 74 = 54 mph.