Deviate to research method!

I surprised when Dr. Zaida told to prepare an evaluation form or even questionary we have to know about scales of measurement. However I had a little bit information about them but I didn’t know that I have to apply them in preparing evaluation form and questionaries…

Magnitude, equal intervals and absolute zero are the properties of scales. Considering to these properties we will have :

A RATIO SCALE: Any scale of measurement possessing magnitude, equal intervals, and an absolute zero point is called a ratio scale.

AN INTERVAL SCALE: An interval scale possess the properties of magnitude and equal intervals but not an absolute zero point. -> Fahrenheit (or Celsius) scale for measuring temperature.

AN ORDINAL SCALE: An ordinal scale reflect only magnitude and does not possess the properties of equal intervals or an absolute zero point. -> ranking students according to their heights .

A NOMINAL SCALE : A nominal scale result from the classification of items into discrete (i.e., mutually exclusive) groups that do not bear any magnitude relationships to one another.