can you get a significant impact on a statistical model by tinkering with the variables? does stata use robust model what regression type produces no significant changes how to test statistical significance which type of regression has no significant coefficients what kind of regression is xtmixed statistical analysis xtmix why are no significant effects when using different types of regression? is a random effect regression statistically significant what type of regression is used to test interaction between categorical variables does random effect affect the statistical model which type of regression model is used to test for non-significant interactions between continuous variable? does simple random effects regression produce significant effects? can you change an experiment to get a significant result do variables change with regression in stata what is the difference between random variable analysis and regression testing why would you use a variable with a random effect and not a significant coefficient? what type of regression is statistically not significant how does a variable affect statistically why do we use random effect regression in stata?