Professor White asked his students to put the number of hours each studied for the final exam on a piece of paper and turn that paper in with the exam. The pieces of paper indicate that students studied 10, 3, 4, 25, 1, 4, 4, 12, 6, 8, and 10 hours. What is the mean number of hours studied?
a. 10
b. 7.9
c. 7
d. 6
(10+3 +4+ 25 + 1+4+ 4 + 12+ 6 +8 +10)/11
87/11 = 7.9
Answer B
10
To find the mean (average) number of hours studied, you need to add up all the hours studied and then divide by the total number of students.
Adding up the hours studied:
10 + 3 + 4 + 25 + 1 + 4 + 4 + 12 + 6 + 8 + 10 = 87
Now, divide the total sum of hours studied by the number of students, which is 11 in this case:
87 / 11 = 7.9
So, the mean number of hours studied is 7.9.
Therefore, the correct answer is b. 7.9.