Consider the probability distribution below. $$\begin{array} { c c }
x & f ( x ) \
10 & .2 \
20 & .3 \
30 & .4 \
40 & .1
\end{array}$$ The variance of x equals
A) 9.165
B) 84
C) 85
D) 93.33

Question

Consider the probability distribution below. $$\begin{array} { c c } 
x & f ( x ) \
10 & .2 \
20 & .3 \
30 & .4 \
40 & .1
\end{array}$$   The variance of x equals
A) 9.165
B) 84
C) 85
D) 93.33

Quizplus · Accepted Answer

The Answer of Consider the probability distribution below. $$\begin{array} { c c } 
x & f ( x ) \
10 & .2 \
20 & .3 \
30 & .4 \
40 & .1
\end{array}$$   The variance of x equals
A) 9.165
B) 84
C) 85
D) 93.33

Consider the Probability Distribution Below xf(x)10.220.330.440.1\begin{array} { c c } x & f ( x ) \\10 & .2 \\20 & .3 \\30 & .4 \\40 & .1\end{array}x10203040​f(x).2.3.4.1​

Consider the Probability Distribution Below $\begin{array} { c c } x & f ( x ) \\10 & .2 \\20 & .3 \\30 & .4 \\40 & .1\end{array}$