10 ! Chapter 1. True Maps, False Impressions: Making, Manipulating, and Interpreting Maps ? 2004 John Wiley & Sons, Inc. GOAL To interpret and critically evaluate maps, to understand how scale influences data representation on maps, and to recognize three types of map scale: representative fraction, verbal, and graphic. You will also learn how to represent data with different types of thematic maps?the dot map, the isoline map, the choropleth map, and the pro- portional symbol map?and see that your choice of map type profoundly influences the resulting spatial pattern. LEARNING OUTCOMES After completing the chapter, you will be able to: ? Convert map scale to real-world distances. ? Recognize choropleth, proportional symbol, isoline, and dot maps.