In Table 7.1, the authors provide a list of the 10 greatest Presidents of all time, according to two separate polls by historians (in 2005 and 2009)….

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In Table 7.1, the authors provide a list of the 10 greatest Presidents of all time, according to two separate polls by historians (in 2005 and 2009). What criteria, or methodology, do you feel should be used when making this type of assessment?