what is the difference between random and fixed standard errors in stata why is stata used to estimate standard error does stata support random effect can stata cluster standard error model does stata rely on random error is stata used with fixed standard errors how do you compute standard error in stata what is stata standard error what is the difference between a variable standard error and a fixed standard error? why does stata support multiple levels which stata model can i use to estimate standard error what is the difference between a fixed error and a clustered standard error in statistics? can stata be used to calculate the standard error does stata use random effect which stata commands can be used for standard errors? is stata clustering standard error can stata predict the standard error what is cluster standard error what is the difference between a cluster and a random model? why do stata models allow clustering