Ratio scale is a quantitative scale used for variable measurement which allows any researcher to compare the intervals of the measured parameter.
Ratio scale is the 4th level of measurement having a zero point or character of origin.
Ratio scale possesses most of the features of the other three variable measurement scale i.e ordinal, nominal and interval scales.
Nominal variables are used to name, or label a series of values.
Ordinal scales provide a sufficient amount of information about the order of choices, such as one would be able to understand from using a customer satisfaction survey, while the interval scales give us the order of values and also about the ability to quantify the difference between each one.
