A think tank of economists is interested in how the distribution of family income has changed in Country X during the last 20 years. The summary measures and histograms shown below are generated for a sample of 500 family incomes, using the 1997 and 2017 income for each family in the sample.
Summary Measures (in thousands of dollars): 
Based on these results, discuss as completely as possible how the distribution of family income in Country X changed from 1997 to 2017.
Definitions:
Extras
Extras refers to additional items or people beyond what is necessary, often enhancing or completing something.
Attentional Blink
A momentary lapse in visual processing that occurs when two stimuli are presented in close succession.
Stroop Effect
A demonstration of interference in the reaction time of a task, where naming the color of the word takes longer and is more prone to errors when the color of the ink does not match the name of the color.
Synaptic Connections
The points at which neurons communicate with each other through the release and reception of chemical messengers called neurotransmitters.
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