Data analysis - how to use factor analysis? Malta Phone Number

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ziaur
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Data analysis - how to use factor analysis? Malta Phone Number

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In data analysis, principal component analysis (PCA) is a well-known data dimensionality reduction method. Factor analysis and principal component analysis are two very similar methods, both of which are dimensionality reduction methods in Malta Phone Number multivariate statistical analysis. But the biggest advantage of factor analysis is that it can name and explain new factors, making the factors interpretable . Therefore, factor analysis can be used as a Malta Phone Number method for dimensionality reduction of early data that "needs to satisfy interpretable data modeling". The following will introduce the principle logic, purpose and implementation process of Python code of factor analysis.

What is factor analysis? The origin of factor analysis is this. In 1904, a British psychologist found that students' scores in English, French and classical were very correlated. He believed that there was a common factor behind the three courses, and finally defined Malta Phone Number this factor. for "language proficiency". Based on this idea, it was found that there are common factor drivers behind many highly correlated factors, thus defining factor analysis. Factor analysis is often used in the fields of economics, psychology, linguistics and sociology, and generally explores the Malta Phone Number underlying factors such as language ability, intelligence, understanding, etc. These factors are all public factors that cannot be calculated directly, but are calculated based on the research data behind them.
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Therefore, in general, factor analysis is to extract variables with certain correlations into a few factors, and use these factors to represent the original variables, and can also classify variables according to factors . for example. Students have six grades in Chinese, Malta Phone Number English, history, mathematics, physics, and chemistry. Through factor analysis, it will be found that these six courses are driven by two common factors, the first three are driven by the "humanities" factor, and the last three are "science". factor; so that each student's scores in liberal arts and Malta Phone Number science can be calculated to assess his performance in both areas. 2. What problems can factor analysis solve? 1. In a multivariate scenario, mining the influencing factors behind For example, in corporate and brand research, consumers survey many questions to evaluate corporate brands.
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