There are different factors that affect students' grades, but the specific problem seems to be to compare the effects of different training methods (a control factor) on grades, which can be carried out by one-way ANOVA.

Data samples, the information of each student's behavior, the first column is the class of the students, and the second column is the grades. The specific operation is "analysis"-"comparison mean"-"one-way ANOVA". Grade is a dependent variable, and class is a dependent variable. In terms of method, you can select "Bonferroni" on the paired comparison button; In addition, if there is more than one factor, the landlord can use multi-factor variance analysis.

factor

By analyzing the supply and demand situation of futures commodities and its influencing factors, the changing trend of futures prices is explained and predicted. Futures trading is based on spot trading. There is a close relationship between futures price and spot price. The supply and demand of commodities and many factors affecting their supply and demand have an important impact on the commodity price in the spot market, and therefore will inevitably have an important impact on the futures price.