Find the standard deviation of the following data. Round your answer to one decimal place. x 88 99 1010 1111 1212 1313 P(X=x)P(X=x) 0.10.1 0.20.2 0.10.1 0.20.2 0.20.2 0.20.2

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Find the standard deviation of the following data. Round your answer to one decimal place.

x 88 99 1010 1111 1212 1313
P(X=x)P(X=x) 0.10.1 0.20.2 0.10.1 0.20.2 0.20.2 0.20.2

 

Expert Solution
Step 1

 

x p(x) x*p(x) x*p(x)
8

0.10

0.8 6.4
9

0.20

1.8 16.2
10 0.10 1.1 11
11 0.20 2.2 24.2
12 0.20 2.4 28.8
13 0.20 2.6 33.8
    Σx*p(x) = 10.9 Σx2*p(x) = 120.4
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