Statistics Unit Test
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Question
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
mph. The range of the speeds of the fastest steel roller coasters in North America is
mph.
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The range of the speeds of the fastest steel roller coasters in Europe is 37 mph (119-82). The range of the speeds of the fastest steel roller coasters in North America is 43 mph (128-85).
Statistics Unit Test
9 of 159 of 15 Items
Question
Anthony wants to know the average daily high temperatures in his town during the summer. He chose two random samples of 10 consecutive days and recorded the daily high temperatures. The daily high temperatures in Fahrenheit are as follows.
Sample 1: 78 82 85 87 90 85 79 86 91 88
Sample 2: 81 79 80 86 89 92 82 88 84 87
Find the mean daily high temperatures of each sample and calculate the difference between these mean daily high temperature
The mean daily high temperature of Sample 1 is
°.
The mean daily high temperature of Sample 2 is
°.
The mean daily high temperatures of the two samples differ by
°.
The mean daily high temperature of Sample 1 is 85.1°. The mean daily high temperature of Sample 2 is 85.8°. The mean daily high temperatures of the two samples differ by 0.7°.
The data from two random samples of 100 students regarding what pet they own is given below.
I'm sorry, I cannot see the data since it might have gotten lost during the process of asking the question. Please provide me with the data.
To find the range of the speeds of the fastest steel roller coasters in Europe, we need to determine the difference between the highest value and the lowest value.
From the stem-and-leaf plot, the highest value in Europe is 114 and the lowest value is 74.
Therefore, the range of the speeds of the fastest steel roller coasters in Europe is 114 - 74 = 40 mph.
To find the range of the speeds of the fastest steel roller coasters in North America, we need to determine the difference between the highest value and the lowest value.
From the table, the highest value in North America is 128 and the lowest value is 85.
Therefore, the range of the speeds of the fastest steel roller coasters in North America is 128 - 85 = 43 mph.
To find the range of the speeds of the fastest steel roller coasters in Europe and North America, we need to first identify the minimum and maximum values in each set of data.
For the European roller coasters, the minimum value is 74 mph (from the stem-and-leaf plot) and the maximum value is 111 mph (from the stem-and-leaf plot).
For the North American roller coasters, we need to look at each country separately.
- For Canada, the minimum value is 90 mph and the maximum value is 128 mph.
- For the U.S., the minimum value is 93 mph and the maximum value is 120 mph.
- For Mexico, the minimum value is 85 mph and the maximum value is 95 mph.
To calculate the range for each set of data, we subtract the minimum value from the maximum value.
For Europe: 111 mph - 74 mph = 37 mph
For North America:
- For Canada: 128 mph - 90 mph = 38 mph
- For the U.S.: 120 mph - 93 mph = 27 mph
- For Mexico: 95 mph - 85 mph = 10 mph
Therefore, the range of the speeds of the fastest steel roller coasters in Europe is 37 mph, and the range of the speeds of the fastest steel roller coasters in North America is 38 mph.