Question

Find the mean $\mu$, variance $\sigma^2$ and standard deviation $\sigma$ for the pmf given below: $\begin{array}{|c|c|c|c|c|} \hline x & -4 & 6 & 11 & 10 \\ \hline p(x) & 0.585 & 0.109 & 0.212 & 0.094 \\ \hline \end{array}$ a) $\mu =$ b) $\sigma^2 =$ c) $\sigma = $

          Find the mean $\mu$, variance $\sigma^2$ and standard deviation $\sigma$ for the pmf given below:

$\begin{array}{|c|c|c|c|c|}
\hline
x & -4 & 6 & 11 & 10 \\
\hline
p(x) & 0.585 & 0.109 & 0.212 & 0.094 \\
\hline
\end{array}$
a) $\mu =$
b) $\sigma^2 =$
c) $\sigma = $

Find the mean μ, variance σ^2 and standard deviation σ for the pmf given below:

x -4 6 11 10

p(x) 0.585 0.109 0.212 0.094
a) μ =
b) σ^2 =
c) σ =

Added by David H.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Pritesh Ranjan

04/21/2023

Step 1

The mean (expected value) of a discrete random variable is calculated by multiplying each value by its corresponding probability and summing them up. Mean = (-4 * 0.585) + (6 * 0.109) + (11 * 0.212) + (10 * 0.094) Show more…

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