Which of the following statements about multicollinearity is true?

a. multicollinearity causes the slopes to be significant while the overall model is not valid.

b. multicollinearity is when the dependent variable has a correlation to more than one independent variable.

c. multicollinearity causes the standard error of the slope estimates to inflate.

d. when serious multicollinearity exists in the model, the r-squared will be too high

Which of the following best explains how the invention of money affected the barter system? a. the invention of money supplemented the barter system by providing a nonperishable medium of exchange b. the invention of money completely replaced the barter system with a free-market system c. the invention of money had no effect on the barter system d. the invention of money drastically reduced the value of goods used in the barter system 2b2t

Your take on decision making process

Which of the following statements about revision is most accurate? (a) you must compose first drafts quickly (sprint writing) and return later for editing. (b) careful writers always revise as they write. (c) revision is required for only long and complex business documents. (d) some business writers prefer to compose first drafts quickly and revise later; others prefer to revise as they go.