Returning to the Baltimore housing data motion chart. Set the x axis to “% of Residential Properties Vacant” and the y axis to “% of Properties Under Mortgage Foreclosure.” What part of the design of the motion chart makes it difficult to use the chart to visualize the association between the two housing variables?

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Original 2000-2009 Housing data set Original 2010-2014 Housing data set Original population data set Get all three data sets • Explore data; choose subset of housing indicators (no missing values) • Remove the year 2000 (not enough data) • Remove "Baltimore City" row from each housing data set Merge all data sets Reformat variables Processed Baltimore housing data