For the following distribution of scores,?X = 18.
$$\begin{array} { c c }
X & \mathrm { f } \
\hline 4 & 1 \
3 & 2 \
2 & 3 \
1 & 2
\end{array}$$

Question

For the following distribution of scores,?X = 18.
$$\begin{array} { c c } 
X & \mathrm { f } \
\hline 4 & 1 \
3 & 2 \
2 & 3 \
1 & 2
\end{array}$$

Quizplus · Accepted Answer

To confirm the answer, calculate the sum of products of X and f:

(4*1) + (3*2) + (2*3) + (1*2) = 18

Since ΣX (the sum of all X values) is also equal to 18, this confirms that the distribution is correctly represented.

For the Following Distribution of Scores,?X = 18 Xf41322312\begin{array} { c c } X & \mathrm { f } \\\hline 4 & 1 \\3 & 2 \\2 & 3 \\1 & 2\end{array}X4321​f1232​​