Given a data set, we can find the mean by adding all the values and then dividing the sum by the number of values.
In this case, we have 8 values, then, the mean is:
[tex]\begin{gathered} \mu=\frac{14+54+54+35+25+34+21+23}{8}=\frac{260}{8}=32.5 \\ \Rightarrow\mu=32.5 \end{gathered}[/tex]therefore, the mean is 32.5
