The mean is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are
the numbers given in the question are
there are 7 numbers in total.
Therefore, the mean will be
![\begin{gathered} \operatorname{mean}=(2+11+5+6+13+4+9)/(7) \\ \operatorname{mean}=(50)/(7) \\ \operatorname{mean}=7.143 \\ to\text{ the nearest tenths, the mean is} \\ \operatorname{mean}=7.1 \end{gathered}]()
Hence,
the mean of the above set of values to the nearest tenth is = 7.1