SOLUTION: to verify whether a course in research methodology improved performance,a similar test was given to 12 participants before and after the course,the original marks and after the cou

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Question 770350: to verify whether a course in research methodology improved performance,a similar test was given to 12 participants before and after the course,the original marks and after the course marks are given below: original marks- 44 40 61 52 32 44 70 41 67 72 53 72. marks after the course- 53 38 69 57 46 39 73 48 73 74 60 78. Was the course useful?consider these 12 participants as a sample from a population.
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!
marks before the course- 44  40  61  52  32  44  70  41  67  72  53  72.  
 marks after the course- 53  38  69  57  46  39  73  48  73  74  60  78.
difference               +9  -2  +8  +5 +14  -5  +3  +7  +6  +2  +7  +6

Only two didn't improve their scores after the test.  The total points
of improvement is 60 and that means on the average they improved by 5 points.
So yes the course was useful.

Edwin
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