alleryBecause signs cancel, the sum of deviations from the mean may:
ARepeat
BVanish
CDouble
DExplode
Answer & Solution
Correct answer: B. Vanish
1. Positive and negative deviations offset each other.
2. Adding them can give nothing at all.
3. So the sum of deviations may vanish.
_Source: syllabus Mathematics, Chapter 15, Statistics._
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