Question 26 match the following terms to their definitions. map symbol sizes change according to the range of values it represents. a. datum b. map template c. ordinal data d. graduated symbols e. proportional symbols. nad83 is an example of this type of reference system that describes the size and shape of the earth. ranked soil classes (1 best, 2 not so good, 3 bad) assist in standardizing map products and save time in mapping. give all maps in a series the same look. map symbol size reflects the actual size of the data