Math 3118, section 4
Spring 2002
Homework due Thursday, April 26

Consider the following two sets of test scores:
 
Test 1 81 83 87 78 76 75
Test 2 85 91 99 74 67 64

 

  1. Find the mean for each set of test scores.

    2.  
  2. Find the standard deviation for each set of test scores by using formula (11.7) on page 240 of the text.

    3.  
  3. Check your answers by using the second method for calculating the standard deviation,
    i.e., by using formula (11.9).

    4.  

   

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