In a class, there are three groups A, B and C. If one student from group A and two students from group B are shifted to group C, then what happens to the average weight of the students of the class?
It increases.
It decreases.
It remains the same.
No conclusion can be drawn due to insufficient data.
The class average will remain unchanged since there is no addition or removal of individuals from the class. The equilibrium of the average weight will stay the same as before the shifting. Any alteration in the average weight would only occur if individuals were added to or removed from the group(s), which is not the case here.
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