Imagine a 3D bar chart that displays income distribution for various countries. Countries are ranked from poorest to richest based on average income. For each country, there are ten bars, each representing the average income of an income decile (from the poorest 10% to the richest 10%). A student observes that for the countries at the 'poorest' end of the ranking, all ten bars are extremely short, appearing almost flat. Based on this visual evidence, the student concludes that there is very litt