Calculation: the test of t is a bilateral test. As long as the absolute value of t is greater than the critical value, the original hypothesis will not be rejected.
2. The value of p is the probability that the observed results of the sample or more extreme results will appear when the original hypothesis is true. If the p value is very small, it means that the probability of the original hypothesis is very small. If it appears, we have reason to reject the original hypothesis according to the principle of small probability. The smaller the p value, the more sufficient the reason for rejecting the original hypothesis.
Calculation: Probability is defined as: P(A)=m/n, where n represents the total number of all possible basic results in the experiment. M represents the number of basic test results contained in event A. ..
Statistics is a science about understanding the overall quantitative characteristics and quantitative relations of objective phenomena. 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. ?
References:
Baidu Encyclopedia-Statistics