Question
Use the image to answer the question.
A histogram is titled "Number of Students per Class" with number of students on the horizontal axis and frequency on the y-axis. Seven columns are plotted. The number of students ranges from 14 to 21 in increments of 1. The frequency ranges from 0 to 10 in increments of 1. The graph shows the following data: the frequency of 14 students is 4, the frequency of 15 students is 5, the frequency of 16 students is 3, the frequency of 17 students is 3, the frequency of 18 students is 4, the frequency of 19 is 0, the frequency of 20 students is 2, and the frequency of 21 students is 2.
A school created a histogram to track how many students were in each class in the school. Using observations, how many classes are in the school?
(1 point)
Responses
23
23
19
19
26
26
8
8
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To determine how many classes are in the school, we need to add up the frequencies shown in the histogram.
The total number of classes in the school is: 4 + 5 + 3 + 3 + 4 + 0 + 2 + 2 = 23
Therefore, there are 23 classes in the school.
Correct answer: 23
Question
Use the image to answer the question.
A histogram is titled "Number of Students per Class" with number of students on the horizontal axis and frequency on the y-axis. Seven columns are plotted. The number of students ranges from 14 to 21 in increments of 1. The frequency ranges from 0 to 10 in increments of 1. The graph shows the following data: the frequency of 14 students is 4, the frequency of 15 students is 5, the frequency of 16 students is 3, the frequency of 17 students is 3, the frequency of 18 students is 4, the frequency of 19 is 0, the frequency of 20 students is 2, and the frequency of 21 students is 2.
A school created a histogram to track how many students were in each class in the school. What percentage of classes have under 18 students?
(1 point)
Responses
17.4%
17.4%
65.2%
65.2%
82.6%
82.6%
34.8%
34.8%
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To calculate the percentage of classes with under 18 students, we need to sum the frequencies for the classes with less than 18 students (up to 17 students in this case).
The frequencies for students under 18 are: 4 (for 14 students) + 5 (for 15 students) + 3 (for 16 students) + 3 (for 17 students) = 15.
The total number of classes is found by summing all frequencies: 4 + 5 + 3 + 3 + 4 + 0 + 2 + 2 = 23.
The percentage of classes with under 18 students is then calculated as: (15/23) * 100 ≈ 65.2%
Therefore, the percentage of classes with under 18 students is approximately 65.2%.
Correct answer: 65.2%
wrong
Apologies for the error in my previous response. Let's correct it:
To calculate the percentage of classes with under 18 students, we need to sum the frequencies for the classes with 14, 15, 16, and 17 students (which are under 18).
The frequencies for students under 18 are: 4 (for 14 students) + 5 (for 15 students) + 3 (for 16 students) + 3 (for 17 students) = 15.
The total number of classes is found by summing all frequencies: 4 + 5 + 3 + 3 + 4 + 0 + 2 + 2 = 23.
The percentage of classes with under 18 students is then calculated as: (15/23) * 100 = approximately 65.22%
Therefore, the percentage of classes with under 18 students is approximately 65.22%
Correct answer: 65.22%
Use the image to answer the question.
A histogram is titled "Number of Students per Class" with number of students on the horizontal axis and frequency on the y-axis. Seven columns are plotted. The number of students ranges from 14 to 21 in increments of 1. The frequency ranges from 0 to 10 in increments of 1. The graph shows the following data: the frequency of 14 students is 4, the frequency of 15 students is 5, the frequency of 16 students is 3, the frequency of 17 students is 3, the frequency of 18 students is 4, the frequency of 19 is 0, the frequency of 20 students is 2, and the frequency of 21 students is 2.
A school created a histogram to track how many students were in each class in the school. What is the mode?
(1 point)
Responses
15
15
14
14
20
20
19
19
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The mode in a set of data is the value that appears most frequently. Looking at the data provided in the histogram:
- The frequency of 14 students is 4
- The frequency of 15 students is 5
- The frequency of 16 students is 3
- The frequency of 17 students is 3
- The frequency of 18 students is 4
- The frequency of 19 students is 0
- The frequency of 20 students is 2
- The frequency of 21 students is 2
The value that appears most frequently is 15 students because it has a frequency of 5, which is higher than any other value listed.
Therefore, the mode is 15.
Correct answer: 15