Variable is a name of memory location. When you collect quantitative data the numbers you record represent real amounts that can be. Such variables in statistics are broadly divided into four categories such as independent variables dependent variables categorical and continuous variables.
There can be one dependent variable and many independent variables.
Independent variables Dependent variable Control variable. For example sale revenue of a product is the dependent variable and price promotion and place are independent variables. Age is a variable. There are two groups of variables that you need to know about.