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随机现象与生物统计客观世界总是处于永恒变化之中,只有从变化中去认识它,才能对它获得深刻的了解。从变化的性质来说,有量变与质变之分;按变化的现象来分,有必然和偶然之别。科学研究的根本任务,在于揭露隐藏在偶然现象背后的必然性。为精确起见,需用客观数据来描述反映事物本质的规律。随机现象就是一种带有偶然性的现象,即指事物随机会而异的一种不确定状态;它的发生并非没有原因或超自然规律的,而是由许多错综复杂而且作用微小以致容易忽略的因素所
The objective world of random phenomena and biostatistics is always in constant change. Only by understanding it from changes can we gain a deep understanding of it. In terms of the nature of change, there are quantitative and qualitative changes; according to the phenomenon of change, there are inevitable and accidental differences. The fundamental task of scientific research is to expose the inevitability hidden behind the accidental phenomenon. To be precise, objective data must be used to describe the laws that reflect the nature of things. Random phenomenon is a kind of phenomenon with contingency. It refers to an indefinite state in which things will be different at random. Its occurrence is not without reason or supernatural laws, but is caused by many intricate and minute factors that are easily overlooked.