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在农业生产中,我们常常可以看到病、虫害的发生与温度、雨量等许多气象因素有关,作物产量的离低与许多栽培措施有关等不同事物间相互联系的现象,要想知道在这些不同因素间,哪些在所研究的具体条件下是确实有关的,其相互联系的强度又是如何?就要用一定的统计方法加以估计。相关系数就是度量两个(或两个以上)现象间相互关系的密切程度的统计值。事物间的相互关系有量和质两方面,量的方面指相关的程度,度量这种程度的统计值有相关系数和相关率等。质的方面指关系
In agricultural production, we often see the phenomenon of diseases, pests and diseases associated with many meteorological factors such as temperature and rainfall, the low yield of crops and many cultivation measures related to different things such as the phenomenon, to know these differences Among the factors, which are indeed related under the specific conditions under study, what is the strength of their interrelationships? It must be estimated by a certain statistical method. The correlation coefficient is a measure of the closeness of the correlation between two (or more than two) phenomena. The relationship between things is quantitative and qualitative aspects, the amount of aspects refers to the degree of correlation, the measurement of this degree of statistical value has a correlation coefficient and correlation rate. Quality refers to the relationship