Subdivisions of Qualitative and Quantitative variables
Nominal Variable: A variable in qualitative form that describe or name a component of a population.
Ordinal Variable: A qualitative form of ranking or an ordered position in an event.
Discrete Variable: It is quantitative in nature, it adopts countable numbers, also can be values equivalent to insulated points along a line interval. There is a gap between any two values.
Continuous Variable: A quantitative variable that adopt an uncountable numbers. It can adopt values along a line interval, any two values between every possible value.