In this tutorial we're going to create a choropleth map. A choropleth map is a map that uses intensity of color to correspond with statistics of a geographic characteristic within polygons, such as population density or per-capita income.
For this exercise we're going to calculate the household size for municipalities in the Netherlands. We'll use Open Data from Statistics Netherlands (CBS) made available in QGIS through the PDOK Services
plugin. PDOK is a platform for disseminating geodata from the Dutch government.