There is a close correlation between population density and the number of fires in a given region.
一特定地区发生的火灾次数和该地区的人口密度密切相关。
2
People are fleeing the cold: there is a strong correlation between the average temperature in January and population growth, notes Edward Glaeser, a professor of economics at Harvard University.
哈佛大学经济学教授爱德华格雷泽指出，人们趋暖避寒：1月均温与人口增长有着密切的相互关系。
3
This locus showed significant correlation to waterlogging tolerance of the population, explaining 13 9% of total phenotypic variation.