A ratio scale is a type of measurement scale that has a true zero point, allowing for the comparison of absolute magnitudes. This means that not only can you rank the values, but you can also say how many times one value is greater than another. Common examples of ratio scales include measurements like height, weight, and temperature in Kelvin. In a ratio scale, mathematical operations such as addition, subtraction, multiplication, and division are meaningful. This makes it possible to perform a wide range of statistical analyses. Because of its properties, the ratio scale is often used in scientific research and data analysis.