Question

the table shows un data for the population density per square kilometer in the country of Haiti. Marie would like to create a line graph to present this data for a class project. What vertical scale should she choose to best communicate how population density has increased in Haiti from 1950-2010 if 1950=116, 1955=127, 1960=139, 1965=154, 1970=170, 1975=185, 1980=205, 1985=230, 1990=256, 1995=283, 2000=312, 2005=339, 2010=367?

Answer 1

Marie should choose a vertical scale that allows her to clearly represent the increase in population density over time. Since the population density values range from 116 to 367, she could choose a vertical scale with increments that make the differences visible on the graph. For example, she might consider using of 50 or 100 to effectively illustrate the growth in population density from 1950 to 2010.