Question

A group of 7 students was asked, "How many hours did you watch television last week?" Here are their responses.17, 20, 19, 17, 18, 4, 6Find the mean number of hours for these students.If necessary, round your answer to the nearest tenth.hours

Answer 1

The mean of a set of data is the sum of the datas divided by the number of data given.

Hence

`\begin{gathered} \text{Mean}=\frac{sum\text{ of data}}{n} \\ \text{Where n=number of data given } \end{gathered}`

Given the set of data below:

`\begin{gathered} 17,\: 20,\: 19,\: 17,\: 18,\: 4,\: 6 \\ \text{Hence} \\ n=7 \end{gathered}`

The sum is

`17+20+19+17+18+4+6=101`

Hence

The mean number of hour is

`\text{Mean}=(101)/(7)=14.4286`

Therefore

The mean number of hours for these students is 14. 4