A variable that we purposefully change or manipulate is called the independent variable. The thing that changes in response is called the dependent variable. This creates a cause and effect relationship.
Medicare Eligibility Requirements. To be entitled to Medicare, you must be a U.S. citizen or a permanent legal resident, and answer yes to at least one (1) of the following questions:
Eligibility for Medicare does not depend on income; almost everyone who is sixty-five and older is entitled to coverage. Workers are not required to retire when they reach sixty-five to be protected by Medicare.