1、托福备考听力试题之统计学XX年托福备考听力试题之统计学统计学是通过搜索、整理、分析、描述数据等手段,以达到推断所测对象的本质,甚至预测对象未来的一门综合性科学。那么关于托福听力试题方面的统计学又是怎么样的呢?以下是百分网小编精心为大家整理的托福听力试题之统计学,希望对大家备考有所帮助!更多内容请关注应届毕业生网!uestion 21-30There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedica
2、ted to keeping orderly records of governmental units (state and statistics come from the same Latin root, status) and a gentlemanly gambling father who relied on mathematics to increase his skill at playing the odds in games of chance. The influence of the mother on the offspring, statistics, is rep
3、resented by counting, measuring, describing, tabulating, ordering. and the taking of censuses all of which led to modern descriptive statistics. From the influence of the father came modern inferential statistics, which is based squarely on theories of probability.Descriptive statistics involves tab
4、ulating, depicting, and describing collections of data. These data may be quantitative, such as measures of height, intelligence, or grade level - variables that are characterized by an underlying continuum - orthe data may represent qualitative variables, such as sex, college major, or personality
5、type. Large masses of data must generally undergo a process of summarization or reduction before they are comprehensible. Descriptive statistics is a tool for describing or summarizing or reducing to comprehensible form the properties of an otherwise unwieldy mass or data. Inferential statistics is a formalized body of methods for solving another class ofproblems that present great difficulties for the unaided human mind. This general class of prob
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