Further Investigations of Sigma
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Problems for further investigation:

1.  Determine if the following statement is true or false for n = 8.
             

 

2.  Evaluate  where x1 = 5, x2 = 6, x3 = 3, x4 = 9

 

3.  Find   where x1 = 120 lbs, x2 = 135 lbs, x3 = 115 lbs

    and x4 = 150 lbs.    W is the mean weight of four teens.

 

4.  True or False???    

 

5.  True or False???