Discuss cartographers' guidance on appropriate design of choropleth maps

[duncanbradley]

• discuss cartography theory on
  • [x] - appropriate data choice
  • [x] - data classification
  • [x] - titling
  • [ ] - marginalia
  • [x] - statistical classification schemes and algorithms for determining break values
  • [x] - use of < and >
• [x] - discuss the typical use of choropleth maps for displaying geographic pattern (and whether this is a necessary or just a sufficient characteristic)
• [x] - discuss why Figure 1 map is still useful, and a number only wouldn't be equivalent
• [x] - state explicitly that this bias isn't relevant for typically designed charts, so it's not a mandatory consideration, but an optional additional consideration
• [x] - check definition of choropleth maps in introduction

[duncanbradley]

solved with 2975a21