For each of the following variables, identify the level of
measurement (nominal, ordinal, interval, or ratio).
(i) Traffic congestion (e.g. light, medium, heavy)
(ii) Birth month of servers at local restaurant
(iii) Grade point average (e.g. 1.0, 2.0, 3.0 , 4.0)
(iv) Temperature (in Fahrenheit) of office building