Franklin D. Roosevelt (1882-1945) Franklin Delano Roosevelt was born on January 30, 1882 at his parents' estate in Hyde Park, New York. His parents were members of the New York aristocracy. His father, James, was a country gentleman who made money in railroads and coal.
Definition of variable. 1a : a quantity that may assume any one of a set of valuesb : a symbol representing a variable. 2a : something that is variableb : a factor in a scientific experiment that may be subject to change.
For example; 'income' is a variable that can vary between data units in a population (i.e. the people or businesses being studied may not have the same incomes) and can also vary over time for each data unit (i.e. income can go up or down). A continuous variable is a numeric variable.