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Anonymous users2024-02-09Statistics arises from applications and grows in the process of application. With the development of economy and society, the development of the trend of integration of various disciplines and the rapid development of computer technology, the application fields of statistics, statistical theories and analysis methods will continue to develop, showing its vitality and important role in all fields.
First, the understanding of systemic and systemic complexity adds new ideas for the future development of statistics.
Second, the comprehensive integration method combining qualitative and quantitative will provide new ideas for the development of statistical analysis methods.
Third, the penetration of statistical science with other sciences will open up new areas for the application of statistics.
Inferential statistics.
It is used to model the data in the data, calculate its probability, and make inferences about the parent body. This inference may be presented in the form of answers to true/false questions (hypothesis testing), estimates of numerical eigenquantities (estimates), future observations, correlations (correlations), or modeling of relationships (regression). Other modelling techniques include variation analysis (ANOVA), time series, and data mining.
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Anonymous users2024-02-08The formation of concepts is not achieved overnight, and there needs to be a gradual deepening process, so the textbooks of the curriculum standards are arranged with the content of organized statistical activities from the early grades, but the progress of knowledge points is very slow, and the bar chart is not learned until the first stage. How to cultivate students' statistical concepts, you can refer to this.
To enable students to experience the whole process of statistical activities: the establishment of "ideas" requires people's own experience. The most effective way for students to gradually establish statistical concepts is to let them really engage in the whole process of statistical activities. Ask questions, collect data, organize data, analyze data, make decisions, communicate, etc.
For example, the second volume of the first-grade textbook of Beijing Normal University created a situation of organizing a competition, and the students discussed on the playground: "What kind of competition should be organized?" "Ask your classmates what they like best?"
This makes students aware of the role of statistics in decision-making and arouses students' desire to conduct investigations.
The textbook then arranges a small survey, "Investigate some of the students in your class, what activities they like the most, and paint them in the picture below." "It's about organizing students to collect and organize data. Present the data in a scribble on graph paper. Finally, arrange for students to say:
1) As can be seen from the statistical chart, () students were surveyed.
2) The number of people who like () activity is the highest, and the number of people who like () activity is the least.
3) If a student in your class didn't show up, guess what he liked most likely. This is to guide students to analyze data and make sound decisions.
In a communicative situation, if a more serious and sensitive issue makes both parties in the conversation very antagonistic, or even hinders the normal and smooth flow of the conversation, we can temporarily let it be avoided for a while, by changing the topic, using some light-hearted and pleasant topics to enliven the atmosphere and divert the attention of both parties, or through humorous words to dilute the serious topic, so as to reactivate the original stalemate scene, so as to alleviate the awkward situation.
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