It is a methodological science to understand the quantitative regularity of objective phenomena by collecting, sorting out and analyzing statistical data.
Because the quantitative research of statistics is objective, accurate and testable, statistical method has become the most important method in empirical research, which is widely used in the analysis and research of nature, society, economy, science and technology and other fields.
Extended data
In statistics, data is very important. "Data" here refers to the carrier of information. With the advent of the era of big data, the concept of data is becoming more and more flexible.
However, "exploring the internal laws of things with data" is still the core idea of statistics.
Mathematical statistics is the basic theory of statistical discipline, including the theoretical basis of observation and experimental data collection and data analysis; Statistical thought, theoretical model and sample structure in statistical inference and decision-making.
Specifically, there are theoretical and methodological studies focusing on statistical inference, statistical modeling, data analysis methods and statistical calculation.
The core courses of statistics mainly include statistical basis, applied probability theory, advanced statistics, applied stochastic process, regression model, nonparametric statistics, multivariate statistical analysis, time series analysis, sampling survey, experimental design, statistical calculation, data mining, machine learning and actuarial science.
Incomplete data analysis, survival analysis and reliability, longitudinal data analysis, stereotyped data analysis, operational research, econometrics, finance, management, quality control, advanced macroeconomics, advanced microeconomics, advanced econometrics, mathematical programming theory and method, advanced time series analysis, game theory and its application, etc.
Refer to Baidu Encyclopedia-Statistics