Each of
7
students reported the number of movies they saw in the past year. Here is what they reported.
16
,
7
,
4
,
15
,
8
,
13
,
12
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Find the mean number of movies that the students saw.
If necessary, round your answer to the nearest tenth.
movies
To find the mean number of movies that the students saw, add up all of the reported numbers and then divide by the total number of students.
16 + 7 + 4 + 15 + 8 + 13 + 12 = 75
There are 7 students, so divide the sum by 7:
75 / 7 = 10.7
Therefore, the mean number of movies the students saw is 10.7.
A group of
6
students was asked, "How many hours did you watch television last week?" Here are their responses.
9
,
11
,
20
,
13
,
13
,
4
Find the mean number of hours for these students.
If necessary, round your answer to the nearest tenth.
hours
To find the mean number of hours the students watched television, add up all of the reported numbers and then divide by the total number of students.
9 + 11 + 20 + 13 + 13 + 4 = 70
There are 6 students, so divide the sum by 6:
70 / 6 = 11.7
Therefore, the mean number of hours the students watched television is 11.7.
A pet store has
8
cats. Here are their weights (in pounds).
11
,
10
,
10
,
15
,
13
,
14
,
15
,
11
Find the mean weight of these cats.
If necessary, round your answer to the nearest tenth.
pounds
To find the mean weight of the cats, add up all of the reported weights and then divide by the total number of cats.
11 + 10 + 10 + 15 + 13 + 14 + 15 + 11 = 99
There are 8 cats, so divide the sum by 8:
99 / 8 = 12.4
Therefore, the mean weight of the cats is 12.4 pounds.
To find the mean number of movies that the students saw, you need to compute the average of the reported numbers.
To do so, add up all the reported numbers and then divide the sum by the total number of students.
Calculating the sum:
16 + 7 + 4 + 15 + 8 + 13 + 12 = 75
Calculating the mean:
Mean = sum of reported numbers / total number of students = 75 / 7 = 10.7
Therefore, the mean number of movies that the students saw is 10.7 (rounded to the nearest tenth).
To find the mean number of movies that the students saw, you will need to calculate the average of the reported numbers. Here's how you can do it:
1. Sum up all the reported numbers: 16 + 7 + 4 + 15 + 8 + 13 + 12 = 75.
2. Divide the sum by the total number of students (which is 7 in this case): 75 / 7 = 10.7.
3. Round the result to the nearest tenth, as instructed: 10.7 rounded to the nearest tenth is 10.7.
Therefore, the mean number of movies that the students saw is approximately 10.7.