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    bishara1992 Posts: 1, Reputation: 1
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    Apr 1, 2012, 11:11 PM
    How do I get the cumulative sum for differences ? Do I just add all the differences?
    I have 20 observations , each observation varies from 15.05 to a max of 15.08
    Now I need the cumulative sum of differences. The differences for each one is just 15.05 - what result you get for each observation e.g 15.05-15.06 so the difference is 0.01 , now I have 20 differences 0.01, 0.02.0.02.0.00 and it goes on.. so how do I get the cumulative sum of the differences

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