Question C in the 22-year national contest of mathematical modeling can be analyzed by variance, chi-square test, contingency table analysis, data visualization analysis and variance analysis. , and relevant results can be obtained. The Mathematical Modeling Competition for Chinese College Students was founded in 1992, which is the largest basic subject competition in China and the largest mathematical modeling competition in the world. The competition is held in September every year and is open to college students all over the country, regardless of major. The competition is divided into undergraduate and specialist groups. All college students can participate in undergraduate competitions, and only junior college students can participate in junior college competitions.