The study found only a weak positive correlation between the presence of chronic diseases and insurance purchasing;
研究发现患有慢性病与购买保险存在微弱正相关关系；
In the region, population distribution is highly correlated with the total economic output, population and cultivated land shows a weak positive correlation;
③区域范围内人口分布与经济总量高度相关，人口与耕地表现出较弱的正相关性；
The genetic correlation between the birth weight, weaning weight and the other propagation traits mostly were weak positive correlation or negative correlation.
初生重、断奶重分别与其他各繁殖性状间的遗传相关和表型相关大多为弱的正相关或负相关。
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