What Is the Mean for the Population of Scores Shown $$\begin{array} { l l } \ X & \mathrm { f } \\\hline 5 & 1 \\4 & 2 \\3 & 3 \\2 & 4 \\1 & 2\end{array}$$

Multiple Choice

What is the mean for the population of scores shown in the frequency distribution table? $$\begin{array} { l l } \ X & \mathrm { f } \\\hline 5 & 1 \\4 & 2 \\3 & 3 \\2 & 4 \\1 & 2\end{array}$$

A) 15/5 = 3
B) 15/12 = 1.25
C) 32/5 = 6.60
D) 32/12 = 2.67