Give reasons why following sentences are right or wrong:
In choropleth maps, only one value is assigned to the sub-administrative unit.
The given statement is right.
Explanation: Choropleth maps are distributional maps where the data for different geographical variables is represented by either shades of the same color or by different colors. The collected data regarding the variable to be represented is assigned to singular administrative units and the color is assigned as per the distribution with lighter colors representing lower values and darkening with higher values. Each administrative unit has a single value to aid in representation.