Investors who receive ownership interests in a company by purchasing a share of ownership are called bondholders

_____ is an economic policy of lowering tariffs and other barriers to encourage trade.

Fill in the blank(s) with the appropriate word(s).

Which of the following is (are) true?

A) r2 = explained variation / total variation B) r2 = SSx / SSy C) r2 = (total variation - error variation) / total variation D) r2 = (SSy - SSerror) / SSy E) All of the above are true.