The variable would be most useful in determining the number of people eligible for retirement benefits in a certain year is age criteria.
What is retirement benefit?
When an employee reaches his age of retirement from work, he needs to stay at home and perform no work in organization.
So, the age criteria is an important factor to decide the retirement of a person. He is then eligible for all the retirement benefits offered by the private sector organization or government.
Thus, variable would be most useful in determining the number of people eligible for retirement benefits in a certain year is age criteria.
Learn more about retirement benefits.
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