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:
Guide on Medicare eligibility age requirements, how to apply and the many different Medicare plans & benefits available such as formulary, Parts A & B, Part C & Part D.