Allan Wiese, the mayor of Orva, South Dakota, feels that the productivity of meter butlers has declined in the past year. Mayor Wiese’s research assistant provides him with the accompanying data. Convert the frequency distributions to comparable distributions. What can you tell Mayor Wiese about the productivity of his meter butlers?

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Parking Tickets Issued per Meter Butler 21-30 31-40 41-50 51-60 61-70 Number of Butlers May 2010 May 2011 rangla bagno 5 7 9 5 3 29 6 9 12 7 35