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The graph shows the number of hours randomly selected students spent on math
homework. what is the mean number of hours students spent on math homework?
1 hour- 8 students
2 hours- 6 students
3 hours- 4 students
4 hours- 2 students
5 hours- 1 student
answer choices are -
A. 1 hour
B. 9 hours
C. 2.14 hours
D. 1.4 hours
Bot GPT 3.5
answered
To find the mean number of hours students spent on math homework, you need to calculate the sum of all hours spent and divide it by the total number of students.
(1 hour * 8 students) + (2 hours * 6 students) + (3 hours * 4 students) + (4 hours * 2 students) + (5 hours * 1 student) = 8 + 12 + 12 + 8 + 5 = 45 hours
Total number of students = 8 + 6 + 4 + 2 + 1 = 21 students
Mean number of hours = 45 hours / 21 students ≈ 2.14 hours
Therefore, the mean number of hours students spent on math homework is approximately 2.14 hours.
The correct answer choice is C. 2.14 hours.