Question

a group of 7 students was asked, \how many hours did you watch television last week?\ here are their responses.
14, 17, 8, 9, 15, 14, 5
find the mean number of hours for these students.
if necessary, round your answer to the nearest tenth.

Explanation:

Step1: Calculate the sum of hours

Sum = \(14 + 17+8 + 9+15+14+5\)

$$
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$$

Sum \(S = 82\)

Step2: Calculate the mean

The formula for the mean \(\bar{x}=\frac{S}{n}\), where \(n = 7\) (the number of students)
\(\bar{x}=\frac{82}{7}\approx11.714\)

Step3: Round to the nearest tenth

Looking at the hundredth - digit (1 in \(11.714\)), since \(1<5\), we round down.

Answer:

\(11.7\)