Calculate SS variance and standard deviation for the followi

Calculate SS, variance, and standard deviation for the following sample of scores:

15, 16, 9, 1, 9

SS:

Variance:

Standard Deviation

Solution

Getting the mean, X,          
          
X = Sum(x) / n          
Sum(x) =    50      
As n =    5      
Thus,          
X =    10      
          
Setting up tables,          
x   x - X   (x - X)^2  
15   5   25  
16   6   36  
9   -1   1  
1   -9   81  
9   -1   1  
          
          
Thus, Sum(x - X)^2 = SS = 144   [ANSWER, SS]
          
Thus, as           
          
s^2 = Sum(x - X)^2 / (n - 1)          
          
As n =    5      
          
s^2 =    36   [ANSWER, VARIANCE]  
          
Thus,          
          
s =    6   [ANSWER, STANDARD DEVIATION]  

Calculate SS, variance, and standard deviation for the following sample of scores: 15, 16, 9, 1, 9 SS: Variance: Standard DeviationSolutionGetting the mean, X,

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