Amultiple-regression analysis is run to examine third variables as a follow-up to the study indicating that boys with unusual names are more likely to commit crimes. unusual names, ethnic backgrounds, and geographical regions are all included as predictor variables. even after controlling for all of these variables, unusual names still predict criminal activity. why doesn't this study establish causation? a. temporal precedence isn't establishedb. the beta values are not shown, so there isn't enough information to conclude causationc. there may be some other third variabled. no cross-lag correlation was done

There may be some other third variable  

Explanation:

The third variable also called the confounding variables. These are the variables that a researcher does not able to control these variables. These variables eliminate, destroy the internal validity of an experiment. These are also called the mediator variable or confounding variables. These third variables influence the independent as well as the dependent variable. When the researcher is not aware of the third variable and even not able to control the third variable then this variable affects the result of an experiment.

so you know what happened be fore you were alive

explanation:

the density would be a smaller number.