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单词 Political arithmetic
释义

Political arithmetic

原声例句
国富论(三)

I have no great faith in political arithmetic, and I mean not to warrant the exactness of either of these computations.

我对政治算术没有太大的信心,我的意思是不保证这些计算中的任何一个的准确性。

中文百科

统计学 Statistics

(重定向自Political arithmetic)
统计可以推测趋势和规律,说明自然和人文现象。
常态分配的钟型曲线的图

统计学是在数据分析的基础上,自17世纪中叶产生并逐步发展起来的一门学科。它是研究如何测定、收集、整理、归纳和分析反映数据数据,以便给出正确消息的科学。统计广泛地应用在各门学科,从自然科学、社会科学到人文学科,甚至被用来工商业及政府的情报决策之上。随着大数据(Big Data)时代来临,统计的面貌也逐渐改变,与信息、计算等领域密切结合,是数据科学(Data Science)中的重要主轴之一。

譬如自一组数据中,可以摘要并且描述这份数据的集中和离散情形,这个用法称作为描述统计学。另外,观察者以数据的形态,创建出一个用以解释其随机性和不确定性的数学模型,以之来推论研究中的步骤及母体,这种用法被称做推论统计学。这两种用法都可以被称作为应用统计学。数理统计学则是讨论背后的理论基础的学科。

英语百科

Statistics 统计学

(重定向自Political arithmetic)
More probability density is found as one gets closer to the expected (mean) value in a normal distribution. Statistics used in standardized testing assessment are shown. The scales include standard deviations, cumulative percentages, percentile equivalents, Z-scores, T-scores, standard nines, and percentages in standard nines.
Scatter plots are used in descriptive statistics to show the observed relationships between different variables.
A least squares fit: in red the points to be fitted, in blue the fitted line.
In this graph the black line is probability distribution for the test statistic, the critical region is the set of values to the right of the observed data point (observed value of the test statistic) and the p-value is represented by the green area.

Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. In applying statistics to, e.g., a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a statistical model process to be studied. Populations can be diverse topics such as "all people living in a country" or "every atom composing a crystal". Statistics deals with all aspects of data including the planning of data collection in terms of the design of surveys and experiments.

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更新时间:2025/6/20 2:05:21