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Select Country.Continent, FLOOR(AVG(City.Population)) From CITY INNER JOIN COUNTRY ON CITY.CountryCode = COUNTRY.Code GROUP BY COUNTRY.Continent;
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Average Population of Each Continent
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Select Country.Continent, FLOOR(AVG(City.Population)) From CITY INNER JOIN COUNTRY ON CITY.CountryCode = COUNTRY.Code GROUP BY COUNTRY.Continent;