Remember the common measures of central tendency:
\[
\boxed{
\begin{aligned}
\text{Mean} &\rightarrow \text{Uses all observations},
\text{Median} &\rightarrow \text{Middle value},
\text{Mode} &\rightarrow \text{Most frequent value},
\text{Geometric Mean} &\rightarrow \text{Growth rates and indices}.
\end{aligned}
}
\]
Mnemonic: “Mean = Most Representative.”