# chi square function

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### The chi-square distribution of "data analysis/Mining essential knowledge" statistics

The chi-square distribution of statisticsAuthor Bai NingsuAugust 9, 2015 22:33:00 absrtact: This paper summarizes the study of the chi-square distribution of statistics. This article first describes what is the chi-square distribution and

### Chi-square distribution

1. Definition: If n independent random variables ξ₁,ξ₂,...,ξn, are subject to the standard normal distribution (also known as independent distribution in the standard normal distribution), then this n the sum of squares of random variables which

### Chi-Square Inspection and R language Realization _ card square test and R language implementation

The chi-square test is the deviation between the actual observed value and the theoretical inference value of the statistical sample. The deviation between the actual observation value and the theoretical inference value determines the size of the

### Use PHP to make Web data analysis more advanced

Designing your data analysis and performing effective and multi-level analysis on Web data is a key factor for the survival of many Web enterprises, the design (and decision-making) of data analysis tests is usually the work of system administrators

### Use PHP to make Web data analysis more advanced

Use PHP to enable Web data analysis to take your data analysis into consideration, doing more than simply counting raw data Effective and multi-level analysis of Web data is a lot of Web-oriented data analysis, doing more than simply counting the

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### An algorithm of arbitrary order magic Square (magic squares) and implementation of C language

Written in 2012.10:Originally this is rectification that "C Program Design (fourth edition)" of a after class exercises, just start to do when to find the best algorithm on the Internet, the results found that odd and double even (4 multiples) of

### Chi-square test for Feature Selection

As mentioned above, in addition to classification algorithms, the feature extraction algorithms for processing classification texts also have a huge impact on the final effect. Feature Extraction algorithms are classified into feature selection and

### Use PHP to make WEB data analysis into a higher realm

web| Data Meter Your data analysis, do more things than simple original count Effective and multi-level analysis of web data is a key factor in the survival of many web-enabled enterprises, the design (and decision) of data analysis validation is

### Beyond Turing-Turing--on the possibility of the realization of artificial intelligence (I.)

Beyond Turing-Turing--on the possibility of the realization of artificial intelligence (I.) I think that artificial intelligence can be realized into logical thinking, because logical thinking can be completely expressed in string, Turing can be

### Using PHP to get Web data analytics into a higher realm _php

Count your data analysis, do more things than simple primitive counting Effective and multi-layered analysis of web data is a key factor in the survival of many web-oriented enterprises, and the design (and decision-making) of data analysis and

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