Introduction to statistics Principles Prospects or something About 1,500 words Thank you

Tease me, fifteen hundred words.

1. Data collection.

Whether it is medicine, economics, social science, industrial production or scientific experiments, all data are obtained, and the unified dao accounting is to process and refine these data to find out the laws and unknowns. Probability and statistics are the most concise and powerful language to describe social activities.

2. Financial data analysis.

Financial market. Need to analyze the data, the market trend, specifically is to collect the data after processing, the formation of the content conducive to the use, the particularity of financial data makes the processing of financial data also have its special place, with special requirements.

3. Statistics on the proportion of talents.

According to a study by the American Mathematical Society, master's and doctoral graduates in statistics and biostatistics account for 1 3 percent of the total number of graduates in mathematical sciences, not including statistical talents trained in economics, engineering, and sociology.

The principles of statistics include the research objects and methods of statistics, the basic categories of statistics, statistical organization and management, the meaning and types of statistical surveys, statistical survey schemes, statistical survey methods, the meaning and content of statistical collation, statistical grouping, statistical distribution, statistical tables, total indicators, relative indicators, average indicators, variation indicators, the application of comprehensive finger potato labels, the meaning and content of sampling inference, sampling error, sampling estimation methods, and the design of sampling organization.

Significance and hypothesis propositions of hypothesis testing, hypothesis testing methods, conformance test and rank sum test, correlation meaning and types, correlation charts and correlation coefficients, regression analysis, meaning and types of indices, composite and average indices, factor analysis, meaning and types of exponential series, dynamic series, horizontal indicators of current state phenomena, speed indicators of phenomenon development, trend analysis of phenomenon changes, concepts and general steps of statistical comprehensive analysis, statistical comparison, statistical comprehensive evaluation.

The principles of statistics are as follows:

1. The principles of statistics include: the research objects and methods of statistics, the basic categories of statistics, statistical organization and management, the meaning and types of statistical surveys, statistical survey schemes, statistical survey methods, the significance and content of statistical collation, statistical grouping, statistical distribution, statistical tables, total indicators, relative indicators, average indicators, and variation indicators.

2. The application of comprehensive indicators, the significance and content of sampling inference, sampling error, sampling estimation methods, the design of sampling organization, the significance of hypothesis testing and hypothesis propositions, hypothesis testing methods, coincidence test and rank sum test, correlation meaning and types, correlation charts and correlation coefficients, regression analysis, the meaning and types of indices, composite indices and average indices, nuclear information analysis of due to changing banquet wheel primes, and index series.

3. Statistics is a branch of applied mathematics, mainly through the use of probability theory to establish mathematical models, collect data from the observed system, conduct quantitative analysis, summary, and then inference and inference, to provide a basis and reference for Xiangxiang Tangguan decision-making. It is used in a wide range of disciplines, from physical and social sciences to the humanities, and even for business and intelligence decision-making.

4. Statistics is mainly divided into descriptive statistics and inferential statistics. Given a set of data, statistics can summarize and describe the data, a term known as descriptive statistics.

Principles of statistics refer to the research objects and methods of statistics, the basic categories of statistics, statistical organization and management, the meaning and types of statistical surveys, statistical survey schemes, statistical survey methods, the meaning and content of statistical collation, statistical grouping, statistical distribution, statistical tables, total indicators, relative indicators, average search and filial piety indicators, variation indicators, and the application of comprehensive indicators.

The Significance and Content of Sampling Inference, Sampling Error, Methods of Sampling Estimation, Design of Sampling Organization, Hypothesis Testing Chiye Significance and Hypothesis Propositions, Hypothesis Testing Methods, Conformance Test and Rank Sum Test Manuscript, Correlation Meaning and Types, Correlation Charts and Correlation Coefficients, Regression Analysis, Meaning and Types of Indices, Composite Indices and Mean Indices, Factor Analysis.

The meaning and types of exponential series, dynamic series, the level indicators of the development of phenomena, the speed indicators of the development of phenomena, the trend analysis of phenomena changing, the concept of comprehensive statistical analysis and its general steps, statistical comparison, and comprehensive evaluation of statistics.

1 Statistical population vs. overall unit.

A statistical population is the totality of things to be studied determined according to the purpose of statistical research, and is a whole composed of objectively existing individuals with common properties.

The individual units that make up the statistical population are called population units.

As the task, purpose and scope of statistical research changes, the statistical population and the population unit can be transformed into each other.

2 Logo and Logo Performance.

A flag is a name that describes the attributes and characteristics that an overall unit has in common. There are quality marks and quantity marks.

The performance of the sign is the specific performance of the characteristics of the sign in each unit. If the logo is the item to be investigated by the statistics, then the performance of the logo is the actual embodiment of the results obtained from the survey. The performance of the logo is divided into the performance of the old quality mark and the performance of the quantity mark.

3 Variation and Variables.

The sign manifestation of mutable signs changes from one state to another, and this phenomenon or process is statistically called variation.

Invariant quantity flags are called constants or parameters. Variable quantity flags and all statistical indicators are called variables. The numerical representation of a variable is called the variable value, i.e., the flag value or the indicator value.

Variables can be divided into continuous variables and discrete variables according to whether their values are continuous or not.

4 Statistical indicators and indicator systems.

Statistical indicators are scientific concepts or categories that reflect the overall comprehensive quantitative characteristics of social and economic phenomena.

Statistical indicators can be divided into quantitative indicators and qualitative indicators according to the quantitative characteristics they reflect.

The statistical indicator system is a whole composed of various interrelated indicator groups, which are used to illustrate the relationship between the various aspects of the socio-economic phenomenon under study.

The main differences between indicators and statistical markers are:

The indicator is to illustrate the overall characteristics, and the indicators are to illustrate the characteristics of the overall unit; Indicators are measurable, while indicators are not.

The main linkages between the signs and the indicators are as follows:

Indicator values are often summed up from quantitative marker values; Under certain conditions, there is a transformation relationship between quantitative indicators and indicators.

From the question: Q1 Q0 = 115% (the amount of auspicious Zen more) because P1Q1 = P0Q0, that is, P1Q1 P0Q0 = 1 so (P1 P0) * (Q1 Q0) = 1, that is, P1 P0 is about equal to 87%, so ** index book is equal to 87%.