Question

Use the following data set to answer the question below.8 12 15 9 10 12 12 18 14 15 10 11 12 9 17What is the mean for the data set? (Round your answer to the nearest tenth, if necessary.)

Answer 1

We have to calculate the mean of the given dataset.

We can do it with the expression:

`\bar{x}=(1)/(n)\sum_(i=1)^nx_i`

where n is the size of the dataset and xi is the value of each of the elements of the data set.

We can then calculate the mean as:

`\begin{gathered} \bar{x}=(1)/(15)(8+12+15+9+10+12+12+18+14+15+10+11+12+9+17) \\ \\ \bar{x}=(1)/(15)(184) \\ \\ \bar{x}\approx12.3 \end{gathered}`

Answer: the mean of this dataset is 12.3.