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:
Medicare eligibility typically depends on age, but some people get Parts A and B without meeting the age requirements. If you have certain disabilities and are under age 65, then you may get enrolled in original Medicare automatically.