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Mathematics 7 Online
OpenStudy (anonymous):

True or False? The sum of the differences(picture) is not always 0 for any data set consisting of n observations.

OpenStudy (anonymous):

OpenStudy (eyust707):

Not 100 percent sure but my guess is true

OpenStudy (anonymous):

it was false

OpenStudy (anonymous):

It has to be zero. If you take out the mean, It is a number whose value is right in the middle of the data. So its deviation's sum from all the value will be 0.

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