Distribution
The probability distribution of a discrete random variable x is shown below. $$\begin{array} { c | c c c c }
x & 0 & 1 & 2 & 3 \
\hline p ( x ) & .25 & .40 & .20 & .15
\end{array}$$
-Find the expected value,the variance,and the standard deviation of x.
E(x)= ____________________.
Variance = ____________________.
SD = ____________________.

Question

Distribution
The probability distribution of a discrete random variable x is shown below. $$\begin{array} { c | c c c c } 
x & 0 & 1 & 2 & 3 \
\hline p ( x ) & .25 & .40 & .20 & .15
\end{array}$$
-Find the expected value,the variance,and the standard deviation of x.
E(x)= ____________________.
Variance = ____________________.
SD = ____________________.

Quizplus · Accepted Answer

The Answer of Distribution
The probability distribution of a discrete random variable x is shown below. $$\begin{array} { c | c c c c } 
x & 0 & 1 & 2 & 3 \
\hline p ( x ) & .25 & .40 & .20 & .15
\end{array}$$
-Find the expected value,the variance,and the standard deviation of x.
E(x)= ____________________.
Variance = ____________________.
SD = ____________________.

Distribution the Probability Distribution of a Discrete Random Variable X x0123p(x).25.40.20.15\begin{array} { c | c c c c } x & 0 & 1 & 2 & 3 \\\hline p ( x ) & .25 & .40 & .20 & .15\end{array}xp(x)​0.25​1.40​2.20​3.15​​

Distribution
the Probability Distribution of a Discrete Random Variable X $\begin{array} { c | c c c c } x & 0 & 1 & 2 & 3 \\\hline p ( x ) & .25 & .40 & .20 & .15\end{array}$