On a regular spring time a lot of tulip flower fields outside the Keukenhof are headed (taking the flower off) on the 30th of April or within a couple of days after it. If you want to see the flower fields as well make sure that you visit before this date!
In factorial designs, a factor is a major independent variable. In this example we have two factors: time in instruction and setting. A level is a subdivision of a factor. In this example, time in instruction has two levels and setting has two levels. Sometimes we depict a factorial design with a numbering notation.
If multicollinearity is a problem in your model -- if the VIF for a factor is near or above 5 -- the solution may be relatively simple.Try one of these: 1  Remove highly correlated predictors from the model. 2  If you have two or more factors with a high VIF, remove one from the model.n regression, multicollinearity refers to predictors that are correlated with other predictors. Multicollinearity occurs when your model includes multiple factors that are correlated not just to your response variable, but also to each other.