一、气象条件与火灾次数的相关关系 变量之间的关系,一般可分为相关关系和确定的函数关系。如果知道了自变量,可以精确地求出函数值的这种关系叫做确定性关系。城市火灾次数与气象条件有着密切的关系,当空气的湿度比较大时,火灾的次数就比较少,反之,火灾的次数就比较多。但是,它们之间没有严格的确定的函数关系。火灾次数是在一定的范围内变化的。这种变量之间存在密切关系,但又不能由一个(或几个)变量的数值精确求出另一个变量值的 First, the relationship between meteorological conditions and the number of fires The relationship between the variables can generally be divided into the correlation and the determination of the functional relationship. If you know the arguments, the relationship that can be used to find the exact value of a function is called a deterministic relationship. The number of city fires and weather conditions are closely related, when the air humidity is relatively large, the number of fire is relatively small, on the contrary, the number of fire more. However, there is no strictly defined functional relationship between them. The number of fires varies within a certain range. There is a close relationship between these variables, but the value of one (or several) variables can not be exactly determined by the value of another variable