Description Usage Format References See Also
Human population density (in the year 2000) within the contiguous 48 United States.
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A data frame with 48 observations on the following 4 variables.
Statea categorical vector, each state's name
Areaa numeric vector, each state's area
Popdentsa numeric vector, each state's population using the 2000 Census Bureau estimate
Regiona factor, each state's region
Willmott, C. J., S. M. Robeson, and K. Matsuura, 2007. Geographic box plots. Physical Geography, 28, 331-344, DOI: 10.2747/0272-3646.28.4.331.
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