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Find the standard deviation for the given sample data. Round your answer to one more decimal place than the original data.
18 18 18 9 15 5 10 5 15
A) 1.6
B) 5.1
C) 5.8
D) 5.4

Respuesta :

Answer:

D) Standard deviation is 5.41

Step-by-step explanation:

We are given

count N = 9

Sum ∑xi = 113

Mean =  ∑xi /N = 12.55

Standard deviation = [tex]\sqrt{ \frac{(summation xi-mean)^2}{N} - (mean)^2 }[/tex] where i = 1 to 9

 upon substituting the values we get

Standard deviation = [tex]\sqrt{29.277}[/tex] = 5.41

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