Validity that involves how well a study is designed and administered is validity.

What are the similarities and differences between byzantine empire and kiev russia

Which of these choices is part of jesus's teachings? a).all are equal before god. b).people should know their place in society. c).only the upper classes can hope to be saved. d).if someone hits you, you have the right to hit them back.

How does nafta affect relations between the united states and canada? a. it bans immigration between the two countries. b. it opens the borders between the two countries. c. it raises taxes on trade between the two countries. d. it allows free trade between the two countries.