Question about Mean

Question

A group of 7

a group of 7 students was asked, "How many hours did you watch television last week?" Here are their responses.11, 13, 12, 5, 7, 7, 13

Find the mean number of hours for these students.

If necessary, round your answer to the nearest tenth.

Answer 1

The mean is simply the average. To find an average of a group of numbers, add up the numbers and divide your answer by the number of numbers.

so, add up: 11+13+12+5+7+7+13 =. 68

divide by 7: 68/7 = 9.714

round it to the nearest 10th. 9.7

We should get a number somewhere between your highest and lowest numbers., 5 and 13, and we did. When you’re doing averages (means), if you get an answer that is smaller than your smallest number or bigger than your biggest number, there’s a mistake somewhere and you should re-check your work.