45 50 62 48 66 59 Find the standard deviation of this sample

45, 50, 62, 48, 66, 59

Find the standard deviation of this sample of numbers. Round your answer to at least two decimal places

.

Solution

Getting the mean, X,          
          
X = Sum(x) / n          
Sum(x) =    330      
          
Thus,          
X =    55      
          
Setting up tables,          
x   x - X   (x - X)^2  
45   -10   100  
50   -5   25  
62   7   49  
48   -7   49  
66   11   121  
59   4   16      
          
          
          
Thus, Sum(x - X)^2 =    360      
          
Thus, as           
          
s^2 = Sum(x - X)^2 / (n - 1)          
          
As n =    6      
          
s^2 =    72      
          
Thus,          
          
s =    8.485281374   [answer]  

45, 50, 62, 48, 66, 59 Find the standard deviation of this sample of numbers. Round your answer to at least two decimal places .SolutionGetting the mean, X, X =

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