What is the mean for the population of scores shown in the frequency distribution table? $\begin{array}{cc}
X & f \
\hline 5 & 1 \
4 & 2 \
3 & 3 \
2 & 4 \
1 & 2
\end{array}$
A) $ 15 / 5=3 $
B) $ 15 / 12=1.25 $
C) $ 32 / 5=6.60 $
D) $ 32 / 12=2.67 $

Question

Quizplus · Accepted Answer

The mean is calculated by dividing the sum of all scores by the total frequency. The sum of scores is $5*1 + 4*2 + 3*3 + 2*4 + 1*2 = 32$ and the total frequency is $1+2+3+4+2=12$. Thus, the mean is $32/12=2.67$.

What Is the Mean for the Population of Scores Shown Xf5142332412\begin{array}{cc}X & f \\\hline 5 & 1 \\4 & 2 \\3 & 3 \\2 & 4 \\1 & 2\end{array}X54321​f12342​​

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