Statistics Basics 4 | Interview Question
Question
The sum of the deviations about the mean is always:
a. Range
b. Zero
c. Total Deviation
d. Positive
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Answers ( 3 )
ZERO!
it is for a fact that all the deviations above mean will be equal and opposite to the deviations below mean. So, net result will be null as they will cancel out each other.
Zero. Some of the deviations from mean will be positive and some will be negative. So-net deviation will become zero.
zero as sum of deviation would be zero