Find the sample variance s2 for the given data Round your fi

Find the sample variance s2 for the given data. Round your final answer to two decimal places.
2, 5, 10, 7, 8
A) 7.44 B) 2.73 C) 3.05 D) 9.30

Solution

Getting the mean, X,          
          
X = Sum(x) / n          
Sum(x) =    32      
As n =    5      
Thus,          
X =    6.4      
          
Setting up tables,          
x   x - X   (x - X)^2  
2   -4.4   19.36  
5   -1.4   1.96  
10   3.6   12.96  
7   0.6   0.36  
8   1.6   2.56  
          
Thus, Sum(x - X)^2 =    37.2      
          
Thus, as           
          
s^2 = Sum(x - X)^2 / (n - 1)          
          
As n =    5      
          
s^2 =    9.3 [answer, variance, OPTION D]  

Find the sample variance s2 for the given data. Round your final answer to two decimal places. 2, 5, 10, 7, 8 A) 7.44 B) 2.73 C) 3.05 D) 9.30SolutionGetting the

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