Vectoronica

1. the chi square test for independence : it's possible to not only describe the relationship between two categorical variables, but also assess objectively whether one variable really influences the other, whether they're independent. 1-1) Hypotheses test : It also conducts a hypothesis test. The null hypothesis for this situation is that the variables are independent, the alternative hypothesi..

In this blog, I'm going to talk about a control variable and a contingency table. 1. A control variable : It can only affect the relation between the primary variables of interest when it's related to both the independent and the dependent variable. If the control variable is related to the independent and dependent variable, then it might entirely explain the relation between them. Then, the ob..

In this blog, I'm going to talk about two dependent proportions and means because it dealt with two independent proportions and means in the previous blog. 1. Two dependent proportions : it compares two paired groups on a binary variable using Z-test for two dependent proportions. It's also called McNemar's test. If it has a binary response variable and binary independent variable that distingui..