Question

Complete the following table then find the standard deviation for the table. x P(x)      ...

Complete the following table then find the standard deviation for the table.

x P(x)      
10 0.34
14 0.22
18 0.26
20 0.18
Math   Statistics-And-Probability   
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Answer #1

Solution

Given that

x P(x) x * P(x) x2 * P(x)
10 0.34 3.4 34
14 0.22 3.08 43.12
15 0.26 3.9 58.5
20 0.18 3.6 72
1 13.98 207.62

Standard deviation = =X 2 * P(X) - 2  

   =207.62 -195.4404

=12.1796

= 3.489

Standard deviation =3.49

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