Statistics
posted by Sharon .
The algebraic sum of the derivations of a frequency distribution from its mean is
i) Always positive
ii) Always negative
iii) Zero
iv) A non zero number

Proofread your questions before you post them. Do you mean "deviations"?
Since the mean functions as a fulcrum (balance point), the values on the negative side = the values on the positive side.
What does that tell you?
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