Given data:
The given numbers are 46,3, 92,95,60,68,11 and 78.
The expression for the mean of the given numbers is,
[tex]\begin{gathered} x=\frac{46+3+92+95+60+68+11+78}{8} \\ =\frac{453}{8} \\ =56.625 \\ \approx56.6 \end{gathered}[/tex]Thus, the mean of the given data is 56.6.