Data set 1 has a mean of 120 and a mad of 4. data set 2 has a mean of 132 and a mad of 3. what can be concluded about the two distributions? select each correct answer. the distributions are somewhat similar. the means-to-mad ratio is 3. the means-to-mad ratio is 4. the distributions are different.

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

South america is located within which hemisphere?

Which barrier to economic development is shown in the following examples?