Find the standard deviation of the random variable X.
x |
20 |
47 |
26 |
27 |
|
---|---|---|---|---|---|
P(Xequals=x) |
0.4 |
0.2 |
0.2 |
0.2 |
σ =
(Round the final answer to the nearest tenth as needed. Round all intermediate values to the nearest thousandth as needed.)
Here,
Moreover,
Now,
The variance of X is
and the standard deviation of X is
Find the standard deviation of the random variable X. x 20 47 26 27 P(Xequals=x) 0.4...
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