 For degrees Celsius, 0 degrees is the point at which water freezes. It is not the point at which there is no temperature.</li>
<li>A <strong>ratio scale</strong> has all characteristics an interval scale has, with the addition of an absolute 0 point. Weight is a common example. Weight cannot be smaller than 0, and 0 indicates no weight at all. Not only can we say that the difference between 3 and 2 kilograms is smaller than the difference between 10 and 5 kilograms, we can also say that 10 kilograms is twi