Question

Arrange the following in ascending order on the basis of intensity of the data represented by these shades on map.

Choose the correct answer from the options given below:}

• A. A, B, C, D
• B. D, C, B, A
• C. B, D, A, C
• D. C, A, D, B

Hint:

In a choropleth map, always associate "High Density" or "High Value" with the "Darkest Shade" on the legend.

Answer 1

The Correct Option is A

Concept: In cartography, particularly in Choropleth maps, the "Visual Variable" of value (darkness/lightness) is used to represent the magnitude or intensity of data. The standard convention is that lighter shades represent lower values and darker shades represent higher values.

Step 1: Understanding Shading Conventions.
Choropleth mapping follows a "higher is darker" logic. This allows the human eye to immediately distinguish areas of high concentration from areas of low concentration.

Step 2: Arranging in Ascending Order.
Ascending order means moving from the lowest intensity (lightest) to the highest intensity (darkest):
• 1st (Lowest): Lightest shade (A).
• 2nd: Medium-light shade (C).
• 3rd: Medium-dark shade (B).
• 4th (Highest): Darkest shade (D).

Step 3: Conclusion.
The visual progression from white/light to black/dark represents the increase in the statistical value being mapped.