human
Calculate the mean from a frequency table This table shows the ages of people on a university running team.
To calculate the mean age, what is the most sensible heading for the third column? \begin{tabular}{|c|c|l|}
\hline Age & Frequency & \\
\hline \( 18 \) & \( 7 \) & \\
\hline \( 19 \) & \( 3 \) & \\
\hline \( 20 \) & \( 1 \) & \\
\hline \( 21 \) & \( 2 \) & \\
\hline
\end{tabular} Age + Frequency
gpt
Adds instead of multiplies