Why is matching on more than one variable be difficult? Why would matching be useful in your example?
What will be an ideal response?
When you match on multiple variables, it might be easy to come up with close matches on one of them, but with each succeeding variable, the matches are likely to be weaker. The matching that you end up with will also differ if you match on variables in different orders.
Matching can be useful because it would reduce the differences across groups that are due to individual differences.
You might also like to view...
Causal conclusions
A) Can be drawn from correlational research. B) Cannot be drawn from correlational and differential research. C) Are established by differential research, but not correlational research. D) Are established by correlational research, but not differential research.
Which of the following is an example of a trade association?
A. the AFL-CIO B. the National Association of Manufacturers C. the American Association of Retired People (AARP) D. the National Rifle Association
The authors of the text argue that the two competing theories of citizenship can be reconciled through ______.
A. deliberation B. more direct democracy C. bargaining and compromise D. more direct control of government by elites
Which of the following is a health concern for those living along the U.S./Mexico border?
A. Many American children carry deadly diseases that can easily spread across the border to Mexican colonias. B. Many American children are victims of gun violence from guns that are manufactured in Mexico and illegally imported into the United States. C. Many children on both sides of the border are not vaccinated against common childhood diseases. D. Many Mexican children suffer from polio.